Benchmark DAC1 D-to-A Converter Preamp Headphone Amp Black Rack Ear 24bit 192kHz Unit is in working order. Comes with power cable. Ships FEDEX, CONUS only. Worldwide shipping via ebay international shipping program.

Works great very good to excellent condition

Benchmark DAC2 HGC MINT Selling because Ive decided to upgrade.Since youre reading this, you know what this brilliant piece of kit is about.The DAC2 HGC is near legendary in the realm of DAC-Preamps.Plenty of reviews out there, including detailed lab tests.I would refer viewers to the evaluation and tests by John Atkinson on Stereophile. The DAC2 HGC is an absolutely stellar D-A Converter/Preamp thatcould form the heart of any top-tier system.One would have to pay a lot more to get not much more. PURCHASE WITH CONFIDENCE Im a 75-yr-old retired aerospace engineer whos been an avid audiophile for over 50 years. Ive received 100% Positive Feedback on over 600 transactions since 2002,and sold components on eBay costing over $8k to 100% satisfied customers. FREE SHIPPING ONLY TO CONTIGUOUS STATES Thank you for looking.

The Benchmark DAC 1 Pre combination pre amp Class A headphone amp and 24 bit 192 khz digital to analog converter. Features fixed or variable analog unbalanced RCA and balanced XLR outputs Plus two 1/4 inch 0 ohm, High Current headphone jacks. One headphone jack disables the preamp outputs while the other does not. The many Inputs include USB 2.0, optical toslink, 3 coaxial digital, and one pair of analog stereo RCA connectors. The front volume control is a fully analog high quality Alps brand. The headphones outputs are always variable while the rear balanced XLR and unbalance RCA outputs are selectable as fixed or variable. The versatility of the Benchmark is truly awesome. I have used it in both on my desk connected to 2 computers to powered monitors for both headphone listening and controlling the monitors and in a studio environment to control the studio monitors. All with excellent results. This is a Stereophile Class A recommend component as are each of its offspring. It offers a highly detailed and layered sound that competes well above its price point. This unit is in excellent condition overall with no scratches or dings anywhere on it. In mint condition. Everything functions as it should and it sounds excellent. Comes with power cord, USB cord and original quite extensive manual. Note that these units run warm because of the Class A amplification. Please ask any questions before purchase. This will be sent well packed and insured. This sale is for Unit(s) only as pictured and listed, no any other accessories are included. ** Please note the attached images before purchasing. All used electronics may have nicks and scrapes and signs of age. This unit has been cleaned/handled/used/stored in a smoke free but cat friendly house. Note to Dropshippers: I reuse packing from Amazon and others so your items may show up in a box inconsistent with your company. Expensive items are sent insured and possibly sent signature required. Since I use Ebay shipping, I can only ship to the confirmed address on your account. I do not pre-pack and I test every item before shipping. So any damage or inconsistency with an items condition will be considered as damage while shipping and would be handled as such. I do record serial numbers and or mark items with warranty labels. If you break the seal, there is absolutely no guarantee. User must use free tech support or pay return shipping for warranty returns but we will pay for any return shipping. Small nicks, bumps or other very small things may happen during shipping. Your purchase says you agree that these are beyond our control and can happen Shipping may be via USPS or UPS depending on how your location changes the costs and value for you. If you have a specific shipping need, please send me a message to let me know

Benchmark DAC2 HGC MINT Selling because Ive decided to upgrade.Since youre reading this, you know what this brilliant piece of kit is about.The DAC2 HGC is near legendary in the realm of DAC-Preamps.Plenty of reviews out there, including detailed lab tests.I would refer viewers to the evaluation and tests by John Atkinson on Stereophile. The DAC2 HGC is an absolutely stellar D-A Converter/Preamp thatcould form the heart of any top-tier system.One would have to pay a lot more to get not much more. PURCHASE WITH CONFIDENCE Im a 75-yr-old retired aerospace engineer whos been an avid audiophile for over 50 years. Ive received 100% Positive Feedback on over 600 transactions since 2002,and sold components on eBay costing over $8k to 100% satisfied customers. FREE SHIPPING ONLY TO CONTIGUOUS STATES Thank you for looking.

Works great very good to excellent condition

Works great very good to excellent condition

Benchmark DAC3 HGC Reference Stereo Preamp PCM and D/A Converter . Condition is Used. Shipped with USPS Ground Advantage.The DAC3 is Benchmarks newest 2-channel D/A converter featuring the new ESS Technologies ES9028PRO converter chip. The DAC3 converter has lower THD and THD+N noise than Benchmarks DAC2 converter.Benchmarks DAC1 and DAC2 D/A converter families have been the reference to which other converters have been compared. It is rare to find a converter review that does not draw comparisons to the DAC1 or the DAC2. Benchmark converters are in daily use at many of the worlds finest recording studios and mastering rooms. Benchmark converters are also enjoyed by thousands of audiophiles. Benchmark has raised the bar again ... the DAC3 defines a new reference.Reference PerformanceThe DAC3 delivers outstanding musical detail and precise stereo imaging. It employs an advanced high-headroom digital filter design, and a high-sample-rate Asynchronous USB Audio interface. All inputs are fully isolated from interface jitter by Benchmarks new UltraLock3™ jitter attenuation system.Internal digital processing and conversion is 32-bits, and this processing includes 3.5 dB of headroom above 0 dBFS. This headroom prevents the DSP overloads that commonly occur in other D/A converters.Four balanced 32-bit D/A converters are summed together to create each balanced analog output. This 4:1 summation provides a 6 dB noise reduction, and gives the DAC3 industry-leading performance.Native DSD ConversionAll digital inputs on the DAC3 support native 192 kHz PCM or DSD64 conversion. From any input, DSD is transported with bit accuracy over DoP 1.1. DSD and PCM are both natively converted to analog. There are no DSD to PCM or PCM to DSD conversions to compromise the quality of the music. The DAC3 conversion system seamlessly switches between native PCM and native DSD conversion. DSD over DoP 1.1 is supported by many media players, and DSD downloads are now available from several sources.Direct Connectivity to Power AmplifiersBenchmark DAC1, DAC2, and DAC3 converters are designed to directly drive power amplifiers and speakers. Benchmark converters feature adjustable low-impedance passive attenuators at the XLR outputs that can be used to optimize the interface to the power amplifier (or powered monitor). This unique Benchmark feature optimizes the gain staging between the DAC and the power amplifier. Proper gain staging cannot be overemphasized. When audio stages are properly matched, each component in the audio chain is able to operate at its optimum signal level, and the system performance is significantly improved.Sonically-Neutral Studio MonitoringAll Benchmark converters are designed for maximum transparency. This transparency is absolutely essential in the studio monitoring chain. For this reason, DAC3 converters are ideal for critical reference-quality professional systems. Unlike many competing products, the DAC3 is not designed to add euphonic coloration to the audio. Instead it is designed to be as uncolored and natural as possible.

Collectible and/or specialty electronics are sold without testing. Buyer may return this item at no charge within standard eBay return time frame. Sold as is. No accessories included. Please see photos.

Item Description The DAC1 is a two-channel, 24-bit, 192-kHz Digital-to-Analog audio converter. It is, perhaps, one of the more significant recent advances in digital-audio conversion technology. Listening to audio from the DAC1 is an absolutely truthful experience. The distortion free output is so pristine you can now hear detail which was previously masked by jitter induced artifacts and distortion. If the recording was exceptional, you’ll hear it; if it wasn’t, you’ll hear that as well. The DAC1 is a 192-kHz converter, and will playback 192-kHz signals with a 52-kHz analog bandwidth. THD+N is an astonishing low -105 dB (0.00056%) measured at 0 dBFS, and -107 dB measured at -3 dBFS – at any playback frequency, at any sample rate, and with any degree of input jitter. The secret? UltraLock™ technology. Additional features include: phase-coherence between units, auto-detection and processing of pre-emphasized digital audio, and an ultrahigh performance HPA-2 headphone amplifier with dual outputs. The DAC1 has an internal, international toroidal power supply. The front panel level-control always adjusts the headphone output level. The front panel level-control can also be selected to adjust the output levels at the rear of the converter. Alternately, the output levels can be set at a fixed gain with precision, rear panel; 10-turn trim pots. The balanced output level range is +10 dBu to +29 dBu at 0 dBFS. The DAC1 is essential equipment for mastering and recording studios, broadcast facilities, even audiophile home stereo installations, and all locations that require uncolored monitoring. Features And Performance Two Channel, 24-bit, 192-kHz, D-to-A Conversion Plays 192-kHz with 52-kHz analog bandwidth Direct connection to powered monitors Total jitter immunity via UltraLock™ technology! 116 dB signal-to-noise ratio @ 48-kHz, A weighted THD+N = -107 dB (0.00045%) measured at -3 dBFS, any sample rate, any test frequency AES, S/PDIF, and Toslink inputs Digital input source-selection switch Variable or preset output level controls Balanced Low-Z XLR outputs Unbalanced RCA outputs Automatic de-emphasis for 44.1, 48, and 96-kHz when pre-emphasis bit is set Headphone amp = 0.0003% THD into 60 ? Output-off switch position for headphone-only use Front panel power and error indicating LEDs Internal low-radiation toroidal power supply International 120 - 240 input voltage range 1/2 wide, 1RU high chassis Machined aluminum front panel Rack mountable Condition This unit has been fully tested, is fully operational, and is in great aesthetic condition. Pictures are of actual item. Included This listing includes: 1 - Benchmark DAC1 (pictured) 1 - Power Cord, North American NEMA 5-15 (not pictured) Important We make every effort to accurately describe each item we sell and to give buyers the information needed to bid and buy with confidence. Item will be safely packaged prior to shipping. Item(s) are being sold AS-IS

Item Description The DAC1 is a two-channel, 24-bit, 192-kHz Digital-to-Analog audio converter. It is, perhaps, one of the more significant recent advances in digital-audio conversion technology. Listening to audio from the DAC1 is an absolutely truthful experience. The distortion free output is so pristine you can now hear detail which was previously masked by jitter induced artifacts and distortion. If the recording was exceptional, you’ll hear it; if it wasn’t, you’ll hear that as well. The DAC1 is a 192-kHz converter, and will playback 192-kHz signals with a 52-kHz analog bandwidth. THD+N is an astonishing low -105 dB (0.00056%) measured at 0 dBFS, and -107 dB measured at -3 dBFS – at any playback frequency, at any sample rate, and with any degree of input jitter. The secret? UltraLock™ technology. Additional features include: phase-coherence between units, auto-detection and processing of pre-emphasized digital audio, and an ultrahigh performance HPA-2 headphone amplifier with dual outputs. The DAC1 has an internal, international toroidal power supply. The front panel level-control always adjusts the headphone output level. The front panel level-control can also be selected to adjust the output levels at the rear of the converter. Alternately, the output levels can be set at a fixed gain with precision, rear panel; 10-turn trim pots. The balanced output level range is +10 dBu to +29 dBu at 0 dBFS. The DAC1 is essential equipment for mastering and recording studios, broadcast facilities, even audiophile home stereo installations, and all locations that require uncolored monitoring. Features And Performance Two Channel, 24-bit, 192-kHz, D-to-A Conversion Plays 192-kHz with 52-kHz analog bandwidth Direct connection to powered monitors Total jitter immunity via UltraLock™ technology! 116 dB signal-to-noise ratio @ 48-kHz, A weighted THD+N = -107 dB (0.00045%) measured at -3 dBFS, any sample rate, any test frequency AES, S/PDIF, and Toslink inputs Digital input source-selection switch Variable or preset output level controls Balanced Low-Z XLR outputs Unbalanced RCA outputs Automatic de-emphasis for 44.1, 48, and 96-kHz when pre-emphasis bit is set Headphone amp = 0.0003% THD into 60 ? Output-off switch position for headphone-only use Front panel power and error indicating LEDs Internal low-radiation toroidal power supply International 120 - 240 input voltage range 1/2 wide, 1RU high chassis Machined aluminum front panel Rack mountable Condition This unit has been fully tested, is fully operational, and is in great aesthetic condition. Pictures are of actual item. Included This listing includes: 1 - Benchmark DAC1 (pictured) 1 - Power Cord, North American NEMA 5-15 (not pictured) Important We make every effort to accurately describe each item we sell and to give buyers the information needed to bid and buy with confidence. Item will be safely packaged prior to shipping. Item(s) are being sold AS-IS

Benchmark DAC3 HGC Digital to Analog Converter in silver. Reference stereo preamplifier, dual output headphone amplifier, PCM and DSD D/A converter in original box with remote and manual. Local Pick-up in Oakland, CA available. COSMETIC CONDITION: 9/10 FUNCTIONAL NOTES: Functions as intended and sounds great VOLTAGE: 100 - 240v, 50-60Hz SERIAL NUMBER: 20531295 ORIGINAL BOX: Yes ORIGINAL MANUAL: Yes REMOTE: Yes SHIPPING METHOD: FedEx / USPS / UPS

Benchmark DAC3 Digital to Analog ConvertersHigh-Resolution Playback Begins with an External D/A ConverterUpgrade to an external Benchmark DAC and experience the full capabilities of high-resolution audio.Sonically-Neutral Studio MonitoringBenchmark converters are designed to be sonically neutral. This sonic transparency is absolutely essential in the studio monitoring chain.Benchmark converters have become a standard fixture in many of the worlds finest studios.Bring the Studio into Your Living RoomWhen Benchmarks professional converters are used in hi-fi applications, studio-quality sound can be enjoyed in a home environment. Enjoy pure music without any coloration from the electronics. Hear the music exactly the way it was heard in the studio, and exactly the way the artists intended.Discover the natural, uncolored, analog sound of Benchmark converters.Sit in the Performance SpaceTransparent sound can go beyond replicating the studio experience. Recordings that have been produced with a natural and unprocessed sound can transport you to the performance space. Close your eyes and get ready to be transported!The experience of being there can only happen when the entire audio chain is selected for maximum transparency.Benchmark DAC3 Product FamilyEach member of the DAC3 converter family is sonically identical, and they share identical performance specifications. Each model is built on the same circuit board, but the higher-priced models add additional features.DAC3 BDigital Inputs OnlyNo Volume ControlIdeal for use with a separate preamplifier such as the LA4 or HPA4Excellent choice for professional studio applicationsThe DAC3 B to HPA4 to AHB2 signal chain is our flagship HiFi system.The DAC3 B to LA4 to AHB2 signal chain provides the same performance when a headphone amplifier is not needed.DAC3 LIncludes all of the features found on the DAC3 BAdds our Hybrid Gain Control (combined analog and digital volume control)Adds two pairs of unbalanced inputsExcellent choice when the DAC will act as the system volume control.The DAC3 L to AHB2 signal chain is our second-best signal chain.An LA4 or HPA4 can be added to the chain to raise the performance to that of our flagship system.Volume control is bypassed when an LA4 or HPA4 is addedDAC3 HGCIncludes all of the features found on the DAC3 B and DAC3 LAdds our HPA2™ headphone amplifier.An LA4 or HPA4 can be added to the chain to upgrade the performance to the top tier.Volume control is bypassed when an LA4 or HPA4 is added DAC3 TechnologiesHarmonic CompensationHybrid Gain ControlUltraLock3™ Jitter Attenuation SystemHigh-Headroom DSPMulti-Mode Asynchronous USB Audio SystemQuad 32-bit balanced D/A Conversion SystemDistributed Power RegulationHarmonic CompensationThe ES9028PRO has two distortion compensation systems that independently remove most of the 2nd and 3rd harmonic distortion in the D/A converter. Benchmarks ultra-clean analog output stages allow these systems to be fully leveraged in the DAC3. To the best of our knowledge, no other D/A converter has lower THD than the Benchmark DAC3.Hybrid Gain ControlHGC is Benchmarks unique Hybrid Gain Control system. The DAC3 combines active analog gain control, passive low-impedance attenuators, a 32-bit digital gain control, and a servo-driven volume control. All inputs are controlled by the rotary volume control. This volume control moves in response to commands from the remote control. Analog inputs are never converted to digital, and digital inputs never pass through an analog potentiometer. Digital inputs are precisely controlled in the 32-bit DSP system. The DSP system preserves precise L/R balance, and precise stereo imaging, while avoiding any source of noise and distortion.Benchmarks unique passive output attenuators provide distortion-free gain reduction without reducing the dynamic range of the converter. The attenuators optimize the gain staging between the DAC3 and the power amplifier. This optimization is absolutely essential for maximizing the dynamic range of the entire playback system. Much of the success of the DAC1 and DAC2 converters can be attributed to the passive output attenuators. Musical details can be obscured by system noise whenever a preamplifier and power amplifier are improperly matched. The HGC system will make full use of your power amplifiers dynamic range. Experience new details in your favorite recordings.UltraLock3™ Jitter Attenuation SystemUltraLock3™ is an improved version of the UltraLock2™ system used in the DAC2 product family. UltraLock3™ locks with precise phase accuracy in only 6 ms. In contrast, the UltraLock2™ system required 400 ms. Both UltraLock™ systems provide virtually perfect jitter attenuation, but the lightning-fast lock time of the new UltraLock3™ will be appreciated by many of our users.DSP processing is 32-bits, DSP headroom is 3 dB, sample rate is 211 kHz, and jitter-induced distortion and noise is at least 140 dB below the level of the music - well below the threshold of hearing. Benchmarks UltraLock3™ system eliminates all audible jitter artifacts.High Headroom DSP - with 3.5 dB Excess Digital HeadroomAll of the digital processing in the DAC3 is designed to handle signals as high as +3.5 dBFS. Most digital systems clip signals that exceed 0 dBFS. The 0 dBFS limitation seems reasonable, as 0 dBFS is the highest sinusoidal signal level that can be represented in a digital system. However, a detailed investigation of the mathematics of PCM digital systems will reveal that inter-sample peaks may reach +3.01 dBFS while individual samples never exceed 0 dBFS. These inter-sample peaks are common in commercial releases, and are of no consequence in a PCM system until they reach an interpolation process. But, for a variety of reasons, virtually all audio D/A converters use an interpolation process. The interpolation process is absolutely necessary to achieve 24-bit state-of-the art conversion performance. Unfortunately, inter-sample peaks exceeding 0 dBFS cause clipping in most interpolators. This clipping produces distortion products that are non-harmonic and non-musical . We believe these broadband distortion products often add a harshness or false high-frequency sparkle to digital reproduction. The DAC3 avoids these problems by maintaining at least 3.5 dB of headroom in the entire conversion system. We believe this added headroom is a groundbreaking improvement.Multi-Mode Asynchronous USB SystemBenchmarks USB system supports USB Audio 2.0, DSD, and USB Audio 1.1. It is frequency agile, and will follow sample rate changes initiated by the computer and/or the media playback software. In all modes the USB communications are asynchronous in order to eliminate unnecessary sources of jitter.The DAC3 has a low-jitter master clock which controls the transfer of audio data from the computer to the USB sub-system. The computer asynchronously transfers audio data to a buffer in the DAC3. The contents of the buffer are then asynchronously transferred to the D/A conversion subsystem. This second asynchronous transfer eliminates any traces of jitter that accumulate as the data is transferred between the USB and conversion subsystems. No traces of jitter-induced distortion are measurable to our measurement limits (better than -150 dBFS). This truly represents the state-of-the art. Enjoy the convenience of computer playback without compromise. The Asynchronous USB system supports USB Audio 2.0 for high-resolution 192kHz, and DSD playback. No drivers are required for MAC operating systems. An easy-to-install driver adds 192 kHz and DSD capabilities to Windows operating systems.An asynchronous, driverless USB Audio 1.1 mode supports sample rates up to 96 kHz. This USB mode can be selected from the front panel or from the remote control. The driverless USB Audio 1.1 mode allows quick plug-and-play connections to Windows, MAC, iOS, and Linux operating systems without installing drivers. Just plug in the USB, and the DAC3 becomes an available audio device.The USB subsystem remains active when the DAC3 is powered down. This prevents interruptions to the computer playback operations and eliminates the need to reconfigure the computer every time the converter is turned on.Quad 32-bit Balanced Conversion SystemFour balanced 32-bit D/A converters deliver audio to Benchmarks low-impedance current to voltage converters. The 4:1 redundancy reduces noise and distortion to levels that set new benchmarks. The conversion system at the core of the DAC3 is as good as it gets. The analog circuits that follow the D/A converter are carefully designed. Benchmark has leveraged its long history of building high-end analog audio equipment, in order to create an outstanding output stage.The conversion system in the DAC3 achieves a 6 dB signal to noise improvement through the use of 4:1 summing. The ES9028PRO D/A is an 8-channel 32-bit converter. In the DAC3, four channels are summed in the analog domain to form each of the two output channels.The 4:1 summing also improves the THD. The non-linearities in individual conversion channels are averaged across the four summed channels and incoherent non-linearities are attenuated by 6 dB.Diagnostic Tools - Sample-Rate and Word-Length IndicatorsEver wonder why that 192 kHz 24-bit download on your computer just doesnt sound right? Your media player may be down-sampling to 44.1 kHz and/or truncating to 16-bits. Many computers and media players apply poor-quality sample rate conversion and truncation. Fortunately these problems can be eliminated with the selection a good frequency-agile media player. The sample-rate and word-length displays on the DAC3 confirm the proper operation of your media player.Polarity SwitchYou may encounter recordings with inverted polarity. The DAC3 HGC and DAC3 L include a polarity switch to correct the problem.Home Theater BypassThe DAC3 can be integrated into a home theater system. Typically the DAC3 drives the left and right power amplifiers, and an analog feed from the home theater system is connected to either of the analog inputs on the DAC3. A programmable Home Theater Bypass function sets the pass-through gain to unity when the surround system is active. The DAC3 HGC and DAC3 L include an indicator light that is illuminated when bypass is active.Digital Pass ThroughThe second coaxial input on the DAC3 can be reconfigured as a digital output. In output mode, any selected digital input (including USB) will pass through to the coaxial output. The digital pass through is bit-transparent and even supports DSD (DoP 1.1). Dolby digital and DTS formats can also be passed through to a surround processor.Bi-Directional 12 Volt TriggerBenchmark re-invents the 12 volt trigger. The trigger connection on the DAC2 can be used as an input, an output, or both. It is compatible with any common 12 volt trigger input or output. The trigger can be used to turn a power amplifier on or off automatically. The DAC3 will also respond to a 12 volt trigger to follow the actions of another audio component.Power SwitchThe power switch can place the DAC3 in standby, or full shut down. In full shut down, the unit will still respond to the trigger input and the IR remote control. Power consumption is less than 0.5 W in full shut down.Low Power ConsumptionThe DAC3 uses high-efficiency low noise power supplies and may be operated from any standard international voltage without adjustment. Power consumption is 12 W typical.Distributed Power RegulationTo achieve the lowest possible noise, the DAC3 uses distributed power supply regulation. Each critical subsystem has at least one dedicated low-noise voltage regulator.HPA2™ Headphone Power AmplifierThe DAC3 features the HPA2™ - Benchmarks signature high-current, 0-Ohm headphone power amplifier. The HPA2™ is arguably the ultimate reference headphone power amplifier. It will deliver the full rated performance of the DAC3 to the headphones. The DAC3 has two 1/4 headphone jacks on the front panel. The performance of the HPA2™ remains consistent even when two headphones are being driven simultaneously.

Benchmark DAC3 Digital to Analog ConvertersHigh-Resolution Playback Begins with an External D/A ConverterUpgrade to an external Benchmark DAC and experience the full capabilities of high-resolution audio.Sonically-Neutral Studio MonitoringBenchmark converters are designed to be sonically neutral. This sonic transparency is absolutely essential in the studio monitoring chain.Benchmark converters have become a standard fixture in many of the worlds finest studios.Bring the Studio into Your Living RoomWhen Benchmarks professional converters are used in hi-fi applications, studio-quality sound can be enjoyed in a home environment. Enjoy pure music without any coloration from the electronics. Hear the music exactly the way it was heard in the studio, and exactly the way the artists intended.Discover the natural, uncolored, analog sound of Benchmark converters.Sit in the Performance SpaceTransparent sound can go beyond replicating the studio experience. Recordings that have been produced with a natural and unprocessed sound can transport you to the performance space. Close your eyes and get ready to be transported!The experience of being there can only happen when the entire audio chain is selected for maximum transparency.Benchmark DAC3 Product FamilyEach member of the DAC3 converter family is sonically identical, and they share identical performance specifications. Each model is built on the same circuit board, but the higher-priced models add additional features.DAC3 BDigital Inputs OnlyNo Volume ControlIdeal for use with a separate preamplifier such as the LA4 or HPA4Excellent choice for professional studio applicationsThe DAC3 B to HPA4 to AHB2 signal chain is our flagship HiFi system.The DAC3 B to LA4 to AHB2 signal chain provides the same performance when a headphone amplifier is not needed.DAC3 LIncludes all of the features found on the DAC3 BAdds our Hybrid Gain Control (combined analog and digital volume control)Adds two pairs of unbalanced inputsExcellent choice when the DAC will act as the system volume control.The DAC3 L to AHB2 signal chain is our second-best signal chain.An LA4 or HPA4 can be added to the chain to raise the performance to that of our flagship system.Volume control is bypassed when an LA4 or HPA4 is addedDAC3 HGCIncludes all of the features found on the DAC3 B and DAC3 LAdds our HPA2™ headphone amplifier.An LA4 or HPA4 can be added to the chain to upgrade the performance to the top tier.Volume control is bypassed when an LA4 or HPA4 is added DAC3 TechnologiesHarmonic CompensationHybrid Gain ControlUltraLock3™ Jitter Attenuation SystemHigh-Headroom DSPMulti-Mode Asynchronous USB Audio SystemQuad 32-bit balanced D/A Conversion SystemDistributed Power RegulationHarmonic CompensationThe ES9028PRO has two distortion compensation systems that independently remove most of the 2nd and 3rd harmonic distortion in the D/A converter. Benchmarks ultra-clean analog output stages allow these systems to be fully leveraged in the DAC3. To the best of our knowledge, no other D/A converter has lower THD than the Benchmark DAC3.Hybrid Gain ControlHGC is Benchmarks unique Hybrid Gain Control system. The DAC3 combines active analog gain control, passive low-impedance attenuators, a 32-bit digital gain control, and a servo-driven volume control. All inputs are controlled by the rotary volume control. This volume control moves in response to commands from the remote control. Analog inputs are never converted to digital, and digital inputs never pass through an analog potentiometer. Digital inputs are precisely controlled in the 32-bit DSP system. The DSP system preserves precise L/R balance, and precise stereo imaging, while avoiding any source of noise and distortion.Benchmarks unique passive output attenuators provide distortion-free gain reduction without reducing the dynamic range of the converter. The attenuators optimize the gain staging between the DAC3 and the power amplifier. This optimization is absolutely essential for maximizing the dynamic range of the entire playback system. Much of the success of the DAC1 and DAC2 converters can be attributed to the passive output attenuators. Musical details can be obscured by system noise whenever a preamplifier and power amplifier are improperly matched. The HGC system will make full use of your power amplifiers dynamic range. Experience new details in your favorite recordings.UltraLock3™ Jitter Attenuation SystemUltraLock3™ is an improved version of the UltraLock2™ system used in the DAC2 product family. UltraLock3™ locks with precise phase accuracy in only 6 ms. In contrast, the UltraLock2™ system required 400 ms. Both UltraLock™ systems provide virtually perfect jitter attenuation, but the lightning-fast lock time of the new UltraLock3™ will be appreciated by many of our users.DSP processing is 32-bits, DSP headroom is 3 dB, sample rate is 211 kHz, and jitter-induced distortion and noise is at least 140 dB below the level of the music - well below the threshold of hearing. Benchmarks UltraLock3™ system eliminates all audible jitter artifacts.High Headroom DSP - with 3.5 dB Excess Digital HeadroomAll of the digital processing in the DAC3 is designed to handle signals as high as +3.5 dBFS. Most digital systems clip signals that exceed 0 dBFS. The 0 dBFS limitation seems reasonable, as 0 dBFS is the highest sinusoidal signal level that can be represented in a digital system. However, a detailed investigation of the mathematics of PCM digital systems will reveal that inter-sample peaks may reach +3.01 dBFS while individual samples never exceed 0 dBFS. These inter-sample peaks are common in commercial releases, and are of no consequence in a PCM system until they reach an interpolation process. But, for a variety of reasons, virtually all audio D/A converters use an interpolation process. The interpolation process is absolutely necessary to achieve 24-bit state-of-the art conversion performance. Unfortunately, inter-sample peaks exceeding 0 dBFS cause clipping in most interpolators. This clipping produces distortion products that are non-harmonic and non-musical . We believe these broadband distortion products often add a harshness or false high-frequency sparkle to digital reproduction. The DAC3 avoids these problems by maintaining at least 3.5 dB of headroom in the entire conversion system. We believe this added headroom is a groundbreaking improvement.Multi-Mode Asynchronous USB SystemBenchmarks USB system supports USB Audio 2.0, DSD, and USB Audio 1.1. It is frequency agile, and will follow sample rate changes initiated by the computer and/or the media playback software. In all modes the USB communications are asynchronous in order to eliminate unnecessary sources of jitter.The DAC3 has a low-jitter master clock which controls the transfer of audio data from the computer to the USB sub-system. The computer asynchronously transfers audio data to a buffer in the DAC3. The contents of the buffer are then asynchronously transferred to the D/A conversion subsystem. This second asynchronous transfer eliminates any traces of jitter that accumulate as the data is transferred between the USB and conversion subsystems. No traces of jitter-induced distortion are measurable to our measurement limits (better than -150 dBFS). This truly represents the state-of-the art. Enjoy the convenience of computer playback without compromise. The Asynchronous USB system supports USB Audio 2.0 for high-resolution 192kHz, and DSD playback. No drivers are required for MAC operating systems. An easy-to-install driver adds 192 kHz and DSD capabilities to Windows operating systems.An asynchronous, driverless USB Audio 1.1 mode supports sample rates up to 96 kHz. This USB mode can be selected from the front panel or from the remote control. The driverless USB Audio 1.1 mode allows quick plug-and-play connections to Windows, MAC, iOS, and Linux operating systems without installing drivers. Just plug in the USB, and the DAC3 becomes an available audio device.The USB subsystem remains active when the DAC3 is powered down. This prevents interruptions to the computer playback operations and eliminates the need to reconfigure the computer every time the converter is turned on.Quad 32-bit Balanced Conversion SystemFour balanced 32-bit D/A converters deliver audio to Benchmarks low-impedance current to voltage converters. The 4:1 redundancy reduces noise and distortion to levels that set new benchmarks. The conversion system at the core of the DAC3 is as good as it gets. The analog circuits that follow the D/A converter are carefully designed. Benchmark has leveraged its long history of building high-end analog audio equipment, in order to create an outstanding output stage.The conversion system in the DAC3 achieves a 6 dB signal to noise improvement through the use of 4:1 summing. The ES9028PRO D/A is an 8-channel 32-bit converter. In the DAC3, four channels are summed in the analog domain to form each of the two output channels.The 4:1 summing also improves the THD. The non-linearities in individual conversion channels are averaged across the four summed channels and incoherent non-linearities are attenuated by 6 dB.Diagnostic Tools - Sample-Rate and Word-Length IndicatorsEver wonder why that 192 kHz 24-bit download on your computer just doesnt sound right? Your media player may be down-sampling to 44.1 kHz and/or truncating to 16-bits. Many computers and media players apply poor-quality sample rate conversion and truncation. Fortunately these problems can be eliminated with the selection a good frequency-agile media player. The sample-rate and word-length displays on the DAC3 confirm the proper operation of your media player.Polarity SwitchYou may encounter recordings with inverted polarity. The DAC3 HGC and DAC3 L include a polarity switch to correct the problem.Home Theater BypassThe DAC3 can be integrated into a home theater system. Typically the DAC3 drives the left and right power amplifiers, and an analog feed from the home theater system is connected to either of the analog inputs on the DAC3. A programmable Home Theater Bypass function sets the pass-through gain to unity when the surround system is active. The DAC3 HGC and DAC3 L include an indicator light that is illuminated when bypass is active.Digital Pass ThroughThe second coaxial input on the DAC3 can be reconfigured as a digital output. In output mode, any selected digital input (including USB) will pass through to the coaxial output. The digital pass through is bit-transparent and even supports DSD (DoP 1.1). Dolby digital and DTS formats can also be passed through to a surround processor.Bi-Directional 12 Volt TriggerBenchmark re-invents the 12 volt trigger. The trigger connection on the DAC2 can be used as an input, an output, or both. It is compatible with any common 12 volt trigger input or output. The trigger can be used to turn a power amplifier on or off automatically. The DAC3 will also respond to a 12 volt trigger to follow the actions of another audio component.Power SwitchThe power switch can place the DAC3 in standby, or full shut down. In full shut down, the unit will still respond to the trigger input and the IR remote control. Power consumption is less than 0.5 W in full shut down.Low Power ConsumptionThe DAC3 uses high-efficiency low noise power supplies and may be operated from any standard international voltage without adjustment. Power consumption is 12 W typical.Distributed Power RegulationTo achieve the lowest possible noise, the DAC3 uses distributed power supply regulation. Each critical subsystem has at least one dedicated low-noise voltage regulator.HPA2™ Headphone Power AmplifierThe DAC3 features the HPA2™ - Benchmarks signature high-current, 0-Ohm headphone power amplifier. The HPA2™ is arguably the ultimate reference headphone power amplifier. It will deliver the full rated performance of the DAC3 to the headphones. The DAC3 has two 1/4 headphone jacks on the front panel. The performance of the HPA2™ remains consistent even when two headphones are being driven simultaneously.

Selling a mint condition, flawless performing Benchmark DAC2 HGC Preamp/Headphone Amp. Purchasing an all-in-one streamer as a replacement. This unit was used in a 2 channel hi-fi system. Non smoking, no pets, no kids, low dust environment. Also includes Remote control Power cordConditionPhysical - Like new. No visible cosmetic defectsPerformance - Like new Features Sample Frequencies: 28 to 210 kHz (Coaxial Inputs)8 to 96 kHz (Optical Inputs)44.1, 48, 88.2, 96, 176.4, 192 kHz (USB Input)Bit depth: 24 bitsDigital inputs: 5 (1 USB, 2 Optical, 2 Coaxial)Analog inputs: 2 RCABalanced outputs: 2 channel XLRUnbalanced outputs: 2 RCA (2 x 2 channel)Headphone outputs: 2 (1/4 TRS)Manufacturers Description New TechnologiesHybrid Gain ControlHigh-Headroom DSPUltraLock2™ Jitter Attenuation SystemQuad 32-bit balanced D/A Conversion SystemMulti-Mode Asynchronous USB Audio SystemDistributed Power RegulationReference Performance The DAC2 is Benchmarks second-generation 2-channel D/A converter. The DAC2 converter has lower noise and lower distortion than Benchmarks DAC1 converter.The performance of the DAC2 exceeds the measurement limits of some of todays best test equipment. The DAC2 delivers outstanding musical detail and precise stereo imaging. It employs an advanced high-headroom digital filter design, and a new high-sample-rate Asynchronous USB Audio interface. All inputs are fully isolated from interface jitter by Benchmarks new UltraLock2™ jitter attenuation system. Internal digital processing and conversion is 32-bits, and this processing includes 3.5 dB of headroom above 0 dBFS. This headroom prevents the DSP overloads that commonly occur in other D/A converters. Four balanced 32-bit D/A converter are summed together to create each balanced analog output. This 4:1 summation provides a 6 dB noise reduction, and gives the DAC2 industry-leading performance. Native DSD Conversion All digital inputs on the DAC2 support native PCM or DSD conversion. From any input, DSD is transported with bit accuracy over DoP 1.1. DSD and PCM are both natively converted to analog. There are no DSD to PCM or PCM to DSD conversions to compromise the quality of the music. The DAC2 conversion system seamlessly switches between native PCM and native DSD conversion. DSD over DoP 1.1 is supported by many media players, and DSD downloads are now available from several sources. Direct Connectivity to Power Amplifiers Benchmark DAC1 and DAC2 converters are designed to directly drive power amplifiers and speakers. Benchmark converters feature adjustable low-impedance passive attenuators at the XLR outputs that can be used to optimize the interface to the power amplifier (or powered monitor). This unique Benchmark feature optimizes the gain staging between the DAC and the power amplifier. Proper gain staging cannot be overemphasised. When audio stages are properly matched, each component in the audio chain is able to operate at its optimum signal level, and the system performance is significantly improved. Sonically-Neutral Studio Monitoring All Benchmark converters are designed for maximum transparency. This transparency is absolutely essential in the studio monitoring chain. For this reason, DAC2 converters are ideal for critical reference-quality professional systems. Unlike many competing products, the DAC2 is not designed to add euphonic coloration to the audio. Instead it is designed to be as uncolored and natural as possible.

Benchmark DAC 1 Pre combination pre amp headphone amp and 24 bit 192 khz digital to analog converter. Please note the USB input is limited to 24bit 96khz. Features fixed or variable analog unbalanced RCA and balanced XLR outputs as well as two 1/4 inch headphone jacks. Inputs include USB 2.0, optical toslink, 3 coaxial digital, and one pair of analog stereo RCA connectors. The front volume control is a fully analog high quality Alps brand. The headphones outputs are always variable while the rear balanced XLR and unbalance RCA outputs are selectable as fixed or variable. The versatility of the Benchmark is truly great. I used it in both a headphone setup and in my main home stereo system with excellent results. This is a Stereophile Class A recommend component as are each of its offspring. It offers a highly detailed and layered sound that competes well above its price point. Of all the Benchmark DAC 1 options. The PRE and HDR offer the most versatility and were the last versions of the DAC1 before being replaced by the DAC2. The HDR simply offers a remote control which the PRE does not. This unit is in excellent condition overall with no scratches or dings anywhere on it. The only thing I see that keeps it from being mint is the n in the analog input lettering is partially missing (see photos). Everything functions as it should and it sounds excellent. The original power cord is included. There is no documentation or original packaging but it will be securely packaged for shipping. I will accept offers above my initial listing price if you wish to purchase this before any bids are placed. Once a bid is placed this option will disappear. Please check my feedback and purchase with confidence. Thank you for your interest.

Benchmark DAC 1 Pre combination pre amp headphone amp and 24 bit 192 khz digital to analog converter. Please note the USB input is limited to 24bit 96khz. Features fixed or variable analog unbalanced RCA and balanced XLR outputs as well as two 1/4 inch headphone jacks. Inputs include USB 2.0, optical toslink, 3 coaxial digital, and one pair of analog stereo RCA connectors. The front volume control is a fully analog high quality Alps brand. The headphones outputs are always variable while the rear balanced XLR and unbalance RCA outputs are selectable as fixed or variable. The versatility of the Benchmark is truly great. I used it in both a headphone setup and in my main home stereo system with excellent results. This is a Stereophile Class A recommend component as are each of its offspring. It offers a highly detailed and layered sound that competes well above its price point. Of all the Benchmark DAC 1 options. The PRE and HDR offer the most versatility and were the last versions of the DAC1 before being replaced by the DAC2. The HDR simply offers a remote control which the PRE does not. This unit is in excellent condition overall with no scratches or dings anywhere on it. The only thing I see that keeps it from being mint is the n in the analog input lettering is partially missing (see photos). Everything functions as it should and it sounds excellent. The original power cord is included. There is no documentation or original packaging but it will be securely packaged for shipping. I will accept offers above my initial listing price if you wish to purchase this before any bids are placed. Once a bid is placed this option will disappear. Please check my feedback and purchase with confidence. Thank you for your interest.

Benchmark DAC3 HGC DAC Headphone Amp Preamp (Used). Black faceplace. Excellent condition, works perfect (selling due to owning multiple DAC3, downsizing gear). Including a Benchmark remote, 12v trigger cable, USB cable, locking power cable (sold by Benchmark). Original packaging w/ instructions & spare fuses.