Benchmark DAC3DX Digital to Analogue Converter

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Benchmark DAC3DX Digital to Analogue Converter

Benchmark's third incarnation of the acclaimed DAC3 model is a professsionally-aimed product designed for studio environments. The DAC3 DX provides audio interface emulation, USB to S/PDIF transfer and reference quality monitoring. The unit can also serve as a standalone headphone amp for digital sources where required.

Reference Performance

The 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 Benchmark's 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 analogue output. This 4:1 summation provides a 6 dB noise reduction, and gives the DAC3 industry-leading performance.

Volume Control

Any practical audio system will need a volume control. These days, most audio devices use digital volume controls. These controls place significant demands on the quality of a D/A conversion. An internal D/A converter that starts with the equivalent of 14-bit performance, may only deliver 12-bit performance at typical volume-control settings.

In contrast, the Benchmark DAC3 D/A converter uses a motor-driven 32-bit digital volume control driving a 32-bit D/A conversion stage. This combination delivers true high-resolution audio performance over a wide range of volume settings.

Hybrid Gain Control

Benchmark's unique hybrid volume-control system delivers maximum performance from analogue or digital inputs. A single motor-driven knob controls the volume of the analogue and digital inputs, but the two types of inputs are handled very differently:

  • Digital inputs pass through a 32-bit digital volume control.
  • Analog inputs pass through a traditional analogue volume control.
  • Both share the same knob.

This hybrid approach eliminates all unnecessary A/D and D/A conversion steps. Analog inputs see an entirely analogue path to the outputs. Likewise, digital inputs see an entirely digital path to the 32-bit D/A converter.

Sit In The Performance Space

Transparent 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. However, this can only happen when the entire playback chain is selected for maximum transparency.

Benchmark DAC3DX Digital to Analogue Converter

More Information
Manufacturer Link Benchmark DAC3DX Digital to Analogue Converter
Manufacturer Benchmark
Free warranty 3 years
Delivery Charge Free
Delivery Time Normally 1 - 5 Working Days (Covid-19 and Brexit Delays Possible, contact us for more information)
Card Surcharge No
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Benchmark DAC3DX Digital to Analogue Converter

Main Features

  • Remote controllable (Benchmark Remote sold separately)
  • Hybrid Gain Control
  • Low-Impedance Passive Output Attenuators
  • High-Headroom DSP
  • UltraLock3™ Jitter Attenuation System
  • High-Headroom 32-bit DSP
  • Quad 32-bit balanced D/A Conversion System
  • Multi-Mode Asynchronous USB Audio System
  • Digital Diagnostic Display
  • Volume-Control Bypass
  • Digital Pass Through
  • Distributed Power Regulation
  • "Zero-Ohm" HPA2™ Headphone Amplifier


127 dB – A-Weighted, 0 dBFS = +28 dBu
-111 dBFS, -111 dB, 0.00028% (1 kHz at 0 dBFS)
Frequency Response:
+/- 0.005 dB (20 to 20 kHz) at Fs=192 kHz
-120 dB at 20 Hz
Maximum Amplitude of Idle Tones:
< -147 dB

Physical Properties

237 x 249 x 44.5mm

Benchmark DAC3DX Digital to Analogue Converter