YARBO Audiophile RCA Cable Pair 1M Silver Plated GY-OFHC-7N-UM Quality GermanDetails: One meter left and right cable tested and working perfectly. Audiophile German Product High Quality Cable and plugs by YARBO. Has 6-straight-cut turbine RCA plugs with threaded metal plug covers and directional arrows printed on cable. No bent plugs, odors or smoke. Shipped in a rigid box to avoid damage. 3.2 foot high end Yarbo stereo audio cable with red and black printed label over silver metal cover male RCA connectors on each end. Cable reads YARBO audiophile German Products High Quality (Silver Plated GY-OFHC-7N-UW) Shielded Interference-Free Cables --->. We have other audiophile cables of different lengths and configurations in our store.Weight: 4.9 ounces totalLength: 3.2 feetWill be securely packed and well padded.See our listings for other available items.babclassics - about us General purchasing info:We always show large clear pictures of the exact item being sold - no stock photos.All of our vintage items are authentic - we never try to sell knock offs, fakes, or reproductionsSome of our auctions also have a fixed price option. Please be aware that once anyone makes a bid, the fixed price option is no longer available in most cases.For items that do not require immediate payment, please pay for your items within 3 days or they may be re-listed and a non-payment reported.A USPS, FedEx or UPS Tracking number will be sent to you when your order ships. Returns:Not all babclassics items have free returns - Please view the Shipping and Payments Tab for full details on returning this item.The refund amount will be reduced if the item is damaged, tampered with, or not in the condition it was shipped.Returns must be requested within 30 days of you receiving the items and must be shipped back to us within 7 days of return approval.If available, we will send a similar replacement item after checking with you.We use the eBay return policy - the Shipping and Payments Tab has links explaining our return process All descriptions and photos in this listing are © babclassics

YARBO LS-kabel single ended mit Spreizbananas 2x2,5m solid core Flachdraht versilbert Hochwertiges LS-Kabel in sehr gutem Zustand Ungewöhnliche Konstruktion, versilberter spiralförmig verdrehtersolid core Flachdraht. Spreizbananas für sicheren Kontakt. Ausgewogener homogener Klang, körperhafte musikalische Darstellung. Versicherter Versand mit DHL Versicherter Versand in OVP mit DHL

Idea for all CHORD DACs such as the Qutest , TT2 and DAVE, tested with Qutest and DAVE during design, and each one is individually tested before being shipped. The ultimate QED Silver Reference RCA – BNC cable, fitted with RHODIUM plated RCA plugs –and Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. · New old stock cable and connectors very limited supply. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. 2m RCA to BNC - this is in the range of the optimum length for an SPDIF cable. 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. Length of cable – why 1.5m or more? 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 – up to a maximum of 5m. 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 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.

Idea for all CHORD DACs such as the Qutest , TT2 and DAVE, tested with Qutest and DAVE during design, and each one is individually tested before being shipped. The QED Silver Reference RCA – BNC cable, fitted with gold plated QED RCA plug –and Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. The cable is symmetrical so could be used in either direction RCA-BNC or BNC to RCA. New cable and RCA with brand new Yarbo BNC. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC - this is the optimum length for an SPDIF cable. 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.

Idea for all CHORD DACs such as the Qutest , TT2 and DAVE, tested with Qutest and DAVE during design, and each one is individually tested before being shipped. Also suitable for any streamer or DAC with RCA or BNC inputs / outputs. The QED Silver Reference can be used as RCA – BNC or RCA – BNC cable, fitted with gold plated QED RCA plug –and Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. New cable and RCA with brand new Yarbo BNC. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC - this is the optimum length for an SPDIF cable. 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.

Idea for all CHORD DACs such as the Qutest , TT2 and DAVE, tested with Qutest and DAVE during design, and each one is individually tested before being shipped. The QED Silver Reference RCA – BNC cable, fitted with gold plated QED RCA plug –and Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. New cable and RCA with brand new Yarbo BNC. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. 1.5m RCA to BNC - this is the optimum length for an SPDIF cable. 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. 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. 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. 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 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.

QED Silver Reference single core coaxial 75Ohm cable fitted with gold plated 75Ohm plugs RCA–BNC or BNC-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 BNC's 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 Silver Reference single core coaxial 75Ohm cable fitted with gold plated 75Ohm plugs RCA – BNC 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. See feedback, one customer bought one tried it and then ordered two more! 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. 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 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 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 brand of Next generation 75Ohm plugs, they are of very high quality. The German plugs cost £50 EACH making for a very expensive cable. These are <£10 each thus making viable cable under £70. See item number 354570113663 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.

Idea for all CHORD DACs such as the Qutest , TT2 and DAVE, tested with Qutest and DAVE during design, and each one is individually tested before being shipped. The ultimate QED Silver Reference RCA – BNC cable, fitted with RHODIUM plated RCA plugs –and Yarbo (of Germany) audiophile gold plated copper BNC plug, a unique construction to Audio-Maniacs. · New old stock cable and connectors very limited supply. · Assembled by hand in the UK. · Digital SPDIF cable to connect CD / digital player or streamer to DAC. 3m RCA to BNC - this is with the range of the optimum length for an SPDIF cable (1.5 - 5m) 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. Length of cable – why 1.5m or more? 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 – up to a maximum of 5m. 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 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.

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 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.