If you have a Chord DAC and MScaler this is the pair of cables to connect them. QED Silver Signature solid core BNC – BNC cable, fitted with Yarbo (of Germany) audiophile gold plated COPPER (Not the usual Brass) BNC plug, a unique construction to Audio-Maniacs. TWO CABLES supplied - for the Chord MScaler to Qutest/TT2/DAVE for example.New old stock cable and new connectors. Assembled in the UK by skilled hand. QED no longer make BNCs so I have searched the world and found these excellent audiophile quality connectors from Yarbo of Germany. Most BNCs are designed for CCTV systems, so I was very pleased to find an audiophile quality design made from COPPER, not brass! These are higher quality than the QED versions and fit QED Signature 75Ohm cable perfectly.Assembled by hand in the UK. Silver plated, solid caore 99.999% Oxygen Free Copper, triple shielded (2x braid and 1x foil) and true 75 Ohm construction. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables, including cables for delighted Chord owners.

*** LAST ONE - no more stock available *** QEDs award winning Performance digital SPDIF cable to connect CD / digital player or streamer to DAC. High quality BNC connector on a QED Performance cable, the BNC is by Hicon by Sommer, and designed for hi-fi SPDIF 75 Ohm use. (Hicon are used by Nordost for example for their digital cables costing many £100s) It is the same dark nickel colour and gold plated like the QED RCA. (QED BNCs are no longer made). 3.0m RCA to BNC or BNC to RCA - cable is symmetrical and thus bidirectional. Triple shielded and true 75 Ohm construction. Burned in using the Tara Labs Cascade file and DeoxIt treated for better conductivity. Please see the excellent 100% feedback I have received for several QED digital and analogue cables, I have sold over 10 of these in the last 6 months. Length of cable – why 1.5m-5m is the optimum range of lengths? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. With Digital cables there is an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to diagram in the photos. The signal travelling down a SPDIF (so called digital cable) is actually a square wave ANALOGUE voltage signal, however in reality this square does not have instantaneous changes - the squares are sloped and somewhat rounded off too as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determine how accurately the source can interpret the signal in value 1 or 0 and also timing which not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth) and produces ghost images of itself, which can fool the receiver into thinking that the “ghost” signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the time frame of transition from 0 to 1 or 1 to 0, before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line as that a longer cable eliminates the false readings from the ghost images, and thus reduces timing errors, called jitter and thus sounds better. The optimum size has been determined by measurements and experimentation to be 1.5m or more. Detailed Technical Explanation for those with an enquiring mind. Why SPDIF cables should be 1.5m long. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square-wave, consisting of rising edges and falling edges. These edges are no more than transitions of voltage from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (note that this DOES Not happen instantaneously) The rise-time is important because this is what causes reflections on the transmission-line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission-line unless it was extremely long. Alternately, if the rise-time were less than 1 nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector.Typical stock Transports have around 25 nanosecond rise-times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference, as well as making the interface reliable. When the regulatory testing is done, they attach very inexpensive, inferior cables and measure the emissions. To insure that the manufacturer passes these tests, they take a number of precautions. One is designing-in the slower than necessary 25 nanosecond rise-time. Another is the insertion of various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable.It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around 2 nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, particularly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection comes back to the DAC, if the transition already in process at the receiver has not completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state and there you have jitter. Let’s look at a numerical example:If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds) and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.

Monster M Series solid core oxygen free cable 75 Ohms SPDIF with 75 Ohm BNC plug, gold plated contacts. Gas injected dielectric to reduce effect of insulation on signal, reducing jitter Use to connect your CD player, streamer, or Blu-Ray player to DAC. This is a bargain priced high-quality SPDIF RCA to BNC cable. This was originally sold by Monster in long lengths for component video, the same 75 Ohm cable can equally be used for SPDIF as the specification is the same. I have fitted a gold plated BNC plug to connect to DACs. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever? A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late! Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components? The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTION In the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV. The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) Reflections In addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Unfortunately, that means better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference single core coaxial 75Ohm cable fitted with gold plated 75Ohm plugs RCA to BNC or BNC to RCA These are made up to order in any length (maximum recommended is for SPDIF is 5m) For optimum sound quality we researched, chose and tested 75Ohm RCA and BNC plugs to reduce reflections and therefore jitter, The length is optimised to produce the lowest jitter from reflections, see details below. The RCA plugs are 75Ohm - unusual for RCA plugs. (these were designed originally for video and RF applications, and most importantly keep a consistent distance between centre and core.The BNCs are by Yarbo (of Germany) audiophile gold plated copper BNC plug. The over-all combination, developed after many trials with different cables, and plugs, is a unique construction to Audio-Maniacs. Ideal for all CHORD DACs such as the Qutest, TT2, and DAVE, tested with Qutest and DAVE during design, each individually tested and burned in using the Qutest before being shipped. Also suitable for Linn, NAIM etc with BNC fittings. Silver-plated, 99.999% oxygen-free copper, triple shielded, and true 75 Ohm construction. New off-the-reel cable and gold plated 75Ohm RCA, fitted with new Yarbo plug, Deoxit treated, tested and burned in.Assembled by hand in the UK.Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1m RCA to BNC Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables.

QED DAV FLX1 solid core oxygen free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug to Hicon gold-plated BNC contacts. Ferrite noise absorbing beads added at each end - this is a symmetrical cable so can be RCA to BNC or BNC to RCA. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This is a bargain priced high-quality SPDIF RCA to RCA cable, and can be made in any length. (up to a recommended maximum of 5m). This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high frequency digital signal and cause increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

Excellent Ixos reference standard 75Ohm cable tested with the Chord Qutest and DAVE. Ideal for all CHORD DACs such as the Qutest, TT2, and DAVE, tested with Qutest and DAVE during design, each individually tested and burned in using the Qutest before being shipped. Also suitable for Linn, NAIM etc with BNC fittings. Pure Crystal oxygen-free copper cable with low density dielectric and true 75 Ohm construction. The BNC plug is a Yarbo, audiophile quality gold plated copper. (Usually the plugs are brass)Assembled by hand in the UK.Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC is the optimum length for a SPDIF cable. See detail below. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of digital and analogue cables. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference BNC – BNC cable, fitted Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. TWO CABLES supplied - for the Chord MScaler to TT2/DAVE for example.New old stock cable off-the-reel and new connectors. I can make any length you require - please email for me for other lengths!QED no longer make BNCs so I have searched the world and found these excellent audiophile quality connectors from Yarbo of Germany. Most BNCs are designed for CCTV systems so I was very pleased to find an audiophile quality design made from COPPER, not brass! These are higher quality that the QED versions and fit QED Silver Reference 75Ohm cable perfectly.Assembled by hand in the UK. Silver plated, 99.999% Oxygen Free Copper, triple shielded (2x braid and 1x foil) and true 75 Ohm construction. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables.

QED DAV FLX1 solid core oxygen free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug, gold plated contacts. Ferrite noise absorbing beads added at each end. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This is a bargain priced high-quality SPDIF RCA to RCA cable, and can be made in any length. (up to a recommended maximum of 5m). This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high frequency digital signal and cause increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference RCA – BNC cable, fitted with QED SIGNATURE gold plated RCA plugs –and Yarbo (of Germany) audiophile gold plated copper BNC plug. A unique construction to Audio-Maniacs. This is new off-the-reel cable fitted with new plugs. Ideal for all CHORD DACs such as the Qutest, TT2, and DAVE, tested with Qutest and DAVE during design, each individually tested and burned in using the Qutest before being shipped. Also suitable for Linn, NAIM etc with BNC fittings. Silver-plated, 99.999% oxygen-free copper, triple shielded, and true 75 Ohm construction. New old stock cable and QED gold plated RCA, fitted with new Yarbo plug, Deoxit treated, tested and burned in.Assembled by hand in the UK.Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC is the optimum length for a SPDIF cable. See detail below. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time. Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED DAV FLX1 solid core oxygen free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug, gold plated contacts. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This is a bargain priced high-quality SPDIF RCA to BNC cable, and can be made in any length. (up to a recommended maximum of 5m). This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high frequency digital signal and cause increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable. BackgroundQ: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help?JitterThe phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. InterferenceFinally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Unfortunately, that means better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference BNC – BNC cable, fitted Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. TWO CABLES supplied - for the Chord MScaler to TT2/DAVE for example.New old stock cable off-the-reel and new connectors. I can make any length you require - please email for me for other lengths!QED no longer make BNCs so I have searched the world and found these excellent audiophile quality connectors from Yarbo of Germany. Most BNCs are designed for CCTV systems so I was very pleased to find an audiophile quality design made from COPPER, not brass! These are higher quality that the QED versions and fit QED Silver Reference 75Ohm cable perfectly.Assembled by hand in the UK. Silver plated, 99.999% Oxygen Free Copper, triple shielded (2x braid and 1x foil) and true 75 Ohm construction. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables.

QED DAV FLX1 solid-core oxygen-free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug, gold plated contacts and a high-end Hicon BNC, used by Nordost for years on their cables. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This bargain-priced high-quality SPDIF RCA to BNC cable can be made at any length. (Up to a recommended maximum of 5m).Optimum length is 1.5-2m - see detailed explanation below. This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high-frequency digital signal and cause an increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable.The Hicon BNC is also 75 Ohms high end cable (used by Nordost in their cables), reducing reflections and thus jittering and improving sound quality. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED DAV FLX1 solid-core oxygen-free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug, gold plated contacts and a high-end Hicon BNC, used by Nordost for years on their cables. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This bargain-priced high-quality SPDIF RCA to BNC cable can be made at any length. (Up to a recommended maximum of 5m).Optimum length is 1.5-2m - see detailed explanation below. This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high-frequency digital signal and cause an increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable.The Hicon BNC is also 75 Ohms high end cable (used by Nordost in their cables), reducing reflections and thus jittering and improving sound quality. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

Monster M Series solid core oxygen free cable 75 Ohms SPDIF with 75 Ohm BNC plug, gold plated contacts. Gas injected dielectric to reduce effect of insulation on signal, reducing jitter Use to connect your CD player, streamer, or Blu-Ray player to DAC. This is a bargain priced high-quality SPDIF RCA to BNC cable. This was originally sold by Monster in long lengths for component video, the same 75 Ohm cable can equally be used for SPDIF as the requirement is the same. BackgroundQ: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help?JitterThe phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. InterferenceFinally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Unfortunately, that means better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference BNC – BNC cable, fitted Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. TWO CABLES supplied - for the Chord MScaler to Qutest/TT2/DAVE for example.New old stock cable off-the-reel and new connectors. I can make any length you require - please email for me for other lengths!QED no longer make BNCs so I have searched the world and found these excellent audiophile quality connectors from Yarbo of Germany. Most BNCs are designed for CCTV systems so I was very pleased to find an audiophile quality design made from COPPER, not brass! These are higher quality that the QED versions and fit QED Silver Reference 75Ohm cable perfectly.Assembled by hand in the UK. Silver plated, 99.999% Oxygen Free Copper, triple shielded (2x braid and 1x foil) and true 75 Ohm construction. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables.

QED DAV FLX1 solid-core oxygen-free copper cable 75 Ohms SPDIF with 75 Ohm RCA plug, gold plated contacts and a high-end Hicon BNC, used by Nordost for years on their cables. Use to connect your CD player, streamer, or Blu-Ray player to DAC. This bargain-priced high-quality SPDIF RCA to BNC cable can be made at any length. (Up to a recommended maximum of 5m).Optimum length is 1.5-2m - see detailed explanation below. This cable is unusual in that most RCAs plugs are not 75 Ohm, so no matter how good the cable, the plugs will cause reflections of the high-frequency digital signal and cause an increased risk of timing errors (jitter). These plugs designed originally for 75 Ohm use in component video and RF applications are a perfect fit for the QED cable and ironically perform better than any of the QED plugs on this cable.The Hicon BNC is also 75 Ohms high end cable (used by Nordost in their cables), reducing reflections and thus jittering and improving sound quality. Background Q: Why do digital cables make a difference – isnt digital perfect sound forever?A: Because years ago, the designers of the digital audio interfaces decided that the audio signals should be sent imperfectly in real-time, rather than perfectly but late!Our day-to-day experiences of sending digital signals are that they arrive perfectly, so what is different about audio? I dont get errors when I save my Word document to my hard drive or send an email to my cousin in the US; how is it so hard to send a signal 1m between two hi-fi components?The critical difference between Hi-Fi and digital documents being sent is that the audio signals are sent IN REAL TIME WITH NO BUFFERING OR ERROR CORRECTIONIn the case of a document sent across the word or to the printer, the data is transmitted in packets and assembled by the receiving machine; in the event of an error, there is time to ask for the signal to be re-sent it, is error corrected, so the result is 100% perfect. This all takes time. The audio signal has no time for any of this. It is sent as a continuous stream (Hence the phrase Streamer) in real-time, so there is no time to process it. If there are errors, then they affect the sound. Why In real-time? - this was decided years ago in the audio industry to allow video and sound to be synchronised - otherwise, lip-sync issues will be caused when playing a DVD or watching TV.The SPDIF interface is applied not only for CD players but also for DVD, Blu-Ray, Streamers etc., not just audio. How do better cables help? Jitter The phrase digital cables is a misnomer. All cables are lengths of wire or glass fibre, through which ANALOGUE voltages or pulses of light are sent. In the case of a wire, the analogue signal is a so-called square wave representing the 1s and 0s of the digital signal. In theory, this should be perfect; however, in practice, this square wave is rarely square - instead, it has rounded edges. The rounder they are, the more timing errors are introduced, called jitter. (How does the receiving machine know where the transition from 1 to 0 is if the edge of the wave is not a sharp vertical transition but a curve or angled line?) ReflectionsIn addition, as the signal hits the end of the cable, it is partially reflected, overlaying an out-of-phase rounded square wave on top of the original signal. This again contributes to errors. Longer cables reduce this issue; short cables are not a good idea. Interference Finally, Radio Frequency interference and Electromagnetic Interference can also introduce errors in the signal and affect the receiving equipment. This emphasises the need for good shielding; in some cases, using Ferrite beads can help with some special equipment. (They can also hinder if incorrectly specified). The better the cable, the squarer the wave, the less reflection, and the less spurious signals from interference. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time.Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

QED Silver Reference RCA – BNC cable, fitted with low mass 75Ohm gold plated RCA plugs* – and Yarbo (of Germany) audiophile gold plated copper BNC plug. A unique construction to Audio-Maniacs. This is new off-the-reel cable fitted with new plugs. I have added this to the range to give customers the option of the closest to 75Ohm RCA plug so far produced, reducing reflections and jitter further. Ideal for all CHORD DACs such as the Qutest, TT2, and DAVE, tested with Qutest and DAVE during design, each individually tested and burned in using the Qutest before being shipped. Also suitable for Linn, NAIM etc with BNC fittings.Silver-plated, 99.999% oxygen-free copper, triple shielded, and true 75 Ohm construction. New old stock cable and QED gold plated RCA, fitted with new Yarbo plug, Deoxit treated, tested and burned in.Assembled by hand in the UK.Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC is the optimum length for a SPDIF cable. See detail below. Burned in using the Tara Labs Cascade file. Very few RCA connectors claim to achieve 75Ohms and this copy of the German Nextgen 110 is one of them.*These RCA plugs are the best copy I have seen of the well known German Nexgen 75Ohm plugs, they are of very high quality. The WBT plugs cost £50 EACH making for a very expensive cable. These are £10 each thus making viable cable under £70. See item number 285151118819 to look at more details of the plugs. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables. Length of cable – why 1.5m? Summary There are only two occasions in audio where a longer cable – or an optimum length cable is better than a short one. Digital cables have an optimum length of 1.5m or more. (The other occasion is for MM phono cartridges, which need a specific capacitance). The reason for this requires an explanation. Please refer to the diagram in the photos. The signal travelling down a SPDIF (so-called digital cable) is actually a square wave ANALOGUE voltage signal; however, in reality, this square does not have instantaneous changes - the squares are sloped and somewhat rounded off, too, as it takes some time to change state from 0 to 1 or 1 to 0. The accuracy of the pulses at the end of the cable determines how accurately the source can interpret the signal in value 1 or 0 and also timing which is not so easy. The signal reflects back off the ends of the cable, the plugs and connected equipment (echoing back and forth). It produces ghost images of itself, which can fool the receiver into thinking that the ghost signals are the original signals. With short cables, under 1m, the ghost signals arrive close to the originals within the transition time frame from 0 to 1 or 1 to 0 before the transition occurs. A 1m cable means the reflection arrives at about the same time as the transition is to be recorded. With longer cables, the reflection arrives too late to influence the receiver (The transition has already been recorded). Longer cables also mean lower amplitude or signal reflection; thus receiver can more easily determine between the correct signal and the spurious reflections. The bottom line is that a longer cable eliminates the false readings from the ghost images and thus reduces timing errors, called jitter, and therefore sounds better. Measurements and experimentation have determined the optimum size to be 1.5m or more. Very detailed explanation- for the curious, accompanies the diagram in the photos. Why SPDIF cables should be 1.5m long, detailed explanation. When the SPDIF signal is launched into the cable from the Transport, it is essentially a voltage square wave, consisting of rising and falling edges. These edges are no more than voltage transitions from about –250mV to +250mV, the rising edge transitioning from minus voltage to plus voltage and the falling edge transitioning from plus voltage to minus voltage. When an edge transitions, it can be described as having a rise-time or fall-time. This is the time it takes for the signal to transition from 10% to 90% of the entire voltage swing. (Note that this DOES Not happen instantaneously). The rise-time is important because this is what causes reflections on the transmission line. If the rise-time were very, very slow, say 50 nanoseconds, then there would be no reflections on the transmission line unless it was extremely long. Alternately, if the rise-time were less than one nanosecond, reflections would occur at every boundary, such as the connection from the circuit board to the wires that go to the connector. Typical stock Transports have around 25 nanosecond rise times. The primary concern for the manufacturer is to pass FCC regulations for emissions and electromagnetic interference and make the interface reliable. When the regulatory testing is done, they attach inexpensive, inferior cables and measure the emissions. To ensure that the manufacturer passes these tests, they take several precautions. One is designing in the slower than necessary 25 nanosecond rise-time. Another is inserting various filters in the Transport to eliminate high frequencies from the signal. As a result of these choices, there is a hazard created in using too short a digital cable. It is a result of the slow rise-time. When a transition is launched into the cable, it takes a period of time to propagate or transit to the other end. This propagation time is somewhat slower than the speed of light, usually around two nanoseconds per foot, but can be longer depending on the dielectrics used in the digital cable. When the transition reaches the end of the transmission line (in the DAC), a reflection can occur that propagates back to the driver in the Transport. Small reflections can occur in even well-matched systems. When the reflection reaches the driver, it can again be reflected back towards the DAC. This ping-pong effect can sustain itself for several bounces depending on the losses in the cable. It is not unusual to see 3-5 of these reflections before they finally decay away, mainly when using the best digital cables, which are usually low-loss. So, how does this affect the jitter? When the first reflection returns to the DAC, if the transition already in process at the receiver has not been completed, the reflection voltage will superimpose itself on the transition voltage, causing the transition to shift in time. The DAC will sample the transition in this time-shifted state, and there you have jitter. Lets look at a numerical example: If the rise-time is 25 nanoseconds and the cable length is 3 feet, then the propagation time is about 6 nanoseconds. Once the transition has arrived at the receiver, the reflection propagates back to the driver (6 nanoseconds), and then the driver reflects this back to the receiver (6 nanoseconds) = 12 nanoseconds. So, as seen at the receiver, 12 nanoseconds after the 25 nanosecond transition started, we have a reflection superimposing on the transition. This is right about the time that the receiver will try to sample the transition, right around 0 volts DC. Not good. Now, if the cable had been 1.5 meters, the reflection would have arrived 18 nanoseconds after the 25 nanosecond transition started at the receiver. This is much better because the receiver has likely already sampled the transition by this time. Unfortunately, better (usually more expensive) cables produce better digital sound. Blame the people who decided on the digital interface decades ago for not separating audio-only from the need to send audio with moving pictures.

The ultimate QED Silver Reference BNC – BNC cable, fitted Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. · New old stock cable and new connectors very limited supply. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. See detail below. Silver plated, 99.999% Oxygen Free Copper, triple shielded and true 75 Ohm construction. Burned in using the Tara Labs Cascade file. Please see the excellent 100% feedback I have received for hundreds of QED digital and analogue cables.

Chord Company Sarum SUPER ARAY Digital BNC to BNC (comes with 2 BNC to RCA adapters) Cable 1 Meter.   Used and fully working. 

Being offered is a 1 meter run of Nordosts universally acclaimed Silver Shadow coaxial digital cable, factory terminated with BNC connectors with RCA adaptors. This serial numbered cable is in excellent low use condition. I have included RCA adaptors but please note that they are of slightly different design with one gold & the other silver (see photos). New cost for this outstanding cable was $650. Buyer pays $16 for US s/h/i, others can get options/estimates from usps using the ship calculator on this page.

About Us Contact Us Terms delivery returns Home Menu Home HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop Customer services About us Delivery & returns Privacy Policy Terms & Conditions Latest Products Chord Clearway Digital Audio Cable BNC To RCA 2.0m - NEW OLD STOCK Chord Clearway Digital Audio Cable BNC To RCA 2.0m - NEW OLD STOCK £90.00 Add to wishlist Watch this item Ask seller a question Description Customer Reviews Delivery Payment Returns Description Chord Clearway Digital Audio Cable BNC To RCA 2.0m - NEW OLD STOCK ** PLEASE NOTE PICTURE IS FOR ILLUSTRATION PURPOSES ONLY, THIS LISTING IS FOR THE ITEM AS DESCRIBED IN THE TITLE ** Fitted with Chord VEE 3 plugs, including PTFE insulation between signal/return contacts. The ABS outer shell and direct silver-plating process improve signal transfer. The ARAY conductor design reduces interference and internal reflections. This new construction method prevents any direct compression on the signal conductor, eliminating changes to impedance. The cable also benefits from a solid core, oxygen free copper signal conductor, low loss, high performance, gas foamed polyethylene insulation, high density braided shield and ARAY conductor. The outer jacket seals and protects the signal ...

About Us Contact Us Terms delivery returns Home Menu Home HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop Customer services About us Delivery & returns Privacy Policy Terms & Conditions Latest Products Chord Clearway Digital Audio Cable BNC To BNC 1.0m - NEW OLD STOCK Chord Clearway Digital Audio Cable BNC To BNC 1.0m - NEW OLD STOCK £60.00 Add to wishlist Watch this item Ask seller a question Description Customer Reviews Delivery Payment Returns Description Chord Clearway Digital Audio Cable BNC To BNC 1.0m - NEW OLD STOCK ** PLEASE NOTE PICTURE IS FOR ILLUSTRATION PURPOSES ONLY, THIS LISTING IS FOR THE ITEM AS DESCRIBED IN THE TITLE ** Fitted with Chord VEE 3 plugs, including PTFE insulation between signal/return contacts. The ABS outer shell and direct silver-plating process improve signal transfer. The ARAY conductor design reduces interference and internal reflections. This new construction method prevents any direct compression on the signal conductor, eliminating changes to impedance. The cable also benefits from a solid core, oxygen free copper signal conductor, low loss, high performance, gas foamed polyethylene insulation, high density braided shield and ARAY conductor. The outer jacket seals and protects the signal ...

About Us Contact Us Terms delivery returns Home Menu Home HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop Customer services About us Delivery & returns Privacy Policy Terms & Conditions Latest Products Chord Clearway Digital Audio Cable BNC To RCA 0.5m - NEW OLD STOCK Chord Clearway Digital Audio Cable BNC To RCA 0.5m - NEW OLD STOCK £50.00 Add to wishlist Watch this item Ask seller a question Description Customer Reviews Delivery Payment Returns Description Chord Clearway Digital Audio Cable BNC To RCA 0.5m - NEW OLD STOCK ** PLEASE NOTE PICTURE IS FOR ILLUSTRATION PURPOSES ONLY, THIS LISTING IS FOR THE ITEM AS DESCRIBED IN THE TITLE ** Fitted with Chord VEE 3 plugs, including PTFE insulation between signal/return contacts. The ABS outer shell and direct silver-plating process improve signal transfer. The ARAY conductor design reduces interference and internal reflections. This new construction method prevents any direct compression on the signal conductor, eliminating changes to impedance. The cable also benefits from a solid core, oxygen free copper signal conductor, low loss, high performance, gas foamed polyethylene insulation, high density braided shield and ARAY conductor. The outer jacket seals and protects the signal ...

About Us Contact Us Terms delivery returns Home Menu Home HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop HiFi All in One Music Systems Amplifiers Blu-Ray and DVD Players Cartridges Stylus Replacements CD Players DACs Digital Products Equipment Supports Headphone Amplifiers Headphones Hi-Fi Supports iPod & MP3 Docks Media Players Music Streamers Other Phono Stages Portable Music Players Speaker Stands and Supports Speakers Tonearms Tuners Turntables and Essentials Home Cinema Cables Eccose Cable Shop Nordost & Wyrewizard Cables QED Cable Shop Wireworld Cable Shop Burn-In Products Cable Burn-In Service Cardas Custom Adaptors & Cable Chord Company Cables Digital Interconnects Ethernet Cables HDMI Cables Interconnects Mains Cables Mains Products Speaker Cables Sub-Woofer Interconnects Tonearm Cables and Connectors USB Cables Cables and Connectors Music CDs Music CDs & SACDs Vinyl Records Accessories BluRay Calibration Cartridge Mounting Kits Cartridge Tags CD, DVD Cleaning & Care Furutech Shop Headshell Leads Headshells Hi-Fi Fuses Isolation Products Mains Blocks Mains Connectors Maintenance / Cleaning Michell Engineering Shop Naim Shop Power Supplys Pro-Ject Turntable Spare Parts Record Cleaning and Care Record Cleaning Machines Record Sleeves Roksan Accessories Stylus Cleaners Tape Cleaners Terminations & Solder Tonearm Essentials Turntable Belts Turntable Covers Turntable Setup Tools Turntable Upgrades and Kits Valve and Tube Essentials Vinyl LP Display & Storage VPI Shop Customer services About us Delivery & returns Privacy Policy Terms & Conditions Latest Products Chord Clearway Digital Audio Cable BNC TO BNC 2.0m - NEW OLD STOCK Chord Clearway Digital Audio Cable BNC TO BNC 2.0m - NEW OLD STOCK £100.00 Add to wishlist Watch this item Ask seller a question Description Customer Reviews Delivery Payment Returns Description Chord Clearway Digital Audio Cable BNC TO BNC 2.0m - NEW OLD STOCK ** PLEASE NOTE PICTURE IS FOR ILLUSTRATION PURPOSES ONLY, THIS LISTING IS FOR THE ITEM AS DESCRIBED IN THE TITLE ** Fitted with Chord VEE 3 plugs, including PTFE insulation between signal/return contacts. The ABS outer shell and direct silver-plating process improve signal transfer. The ARAY conductor design reduces interference and internal reflections. This new construction method prevents any direct compression on the signal conductor, eliminating changes to impedance. The cable also benefits from a solid core, oxygen free copper signal conductor, low loss, high performance, gas foamed polyethylene insulation, high density braided shield and ARAY conductor. The outer jacket seals and protects the signal ...