Benchmark DAC2-HGC Digital to Analog Converter (Silver)

Benchmark DAC2-HGC Digital to Analog Converter (Silver)

Benchmark DAC2-HGC Digital to Analog Converter (Silver)

B&H # BEDAC2HGCS MFR # 500-14800-100
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Product Highlights

  • Up to 24-Bit/192kHz Conversion
  • 4x 32-bit D/A Converters Per XLR Outs
  • 2x TOSlink Optical Digital Inputs
  • 2x Coaxial Digital Inputs
  • 1x USB Digital Input
  • Remote Control
  • 2x RCA Ins for Home Theater Integration
  • Ultralock2 Jitter Attenuation System
  • Native DSD Conversion
  • Sample-Rate & Word-Depth Display
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Color: Silver

Benchmark DAC2-HGC Digital to Analog Converter (Black)

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Benchmark DAC2-HGC Digital to Analog Converter (Silver)

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Benchmark DAC2 HGC overview

  • 1Description

The silver Benchmark DAC2-HGC Digital to Analog Converter is a two-channel preamplifier with built-in headphone amplifier and digital to analog converter system. It is capable of conversions of Direct Stream Digital (DSD) signals as well as Pulse Code Modulation (PCM) files up to 24-bit/192 kHz. Designed as an output device for computer-based media, the DAC2-HGC can be used with home media servers, digital audio workstations, desktop audio editing applications, and computer-based radio broadcast systems. The DAC2-HGC boasts a number of features not found in its predecessor, the DAC1, including native DSD conversion, asynchronous USB 2.0, 32-bit internal processing, and increased I/O options.

The DAC2-HGC follows sample-rate changes initiated by your computer or software and uses a multi-mode asynchronous USB system for data transfer. This allows the unit to act as the clock master, reducing jitter by first transferring the audio data from your computer to an internal buffer then to the digital to analog subsystem. The dual data transfer uses Benchmark's proprietary UltraLock2 jitter attenuation system reducing jitter noise and distortion to at least 140dB below the level of the audio.

The 32-bit internal Digital Signal Processing (DSP) is used in tandem with the DAC2-HGC's active analog gain control and passive low-impedance attenuators for the unit's Hybrid Gain Control, or HGC. The HGC provides you with the dynamic range of an analog system and the accuracy of digital control. All analog inputs are controlled in the analog system and digital inputs in the digital system. The 32-bit DSP also provides up to 3.5dBFS of digital headroom.

The DAC2-HGC features a variety of input and output options. It includes two stereo unbalanced analog RCA inputs, two optical TOSlink digital inputs, two coaxial digital inputs, one USB digital input, two stereo analog unbalanced RCA outputs, and one stereo analog balanced XLR output.

All digital inputs on the DAC2 HGC support native DSD, or Direct Stream Digital file conversion
Four balanced 32-bit DAC audio converters are summed together to form each balanced output channel. This four to one summing reduces noise by up to 6 dB
2x HPA2 headphone outputs with option to automatically mute main outputs
HPA2 gain jumpers allow for customizing headphone output gain for headphone sensitivities
Low-Impedance Passive Output Pads at 0, 10, and 20dB provide optimized output levels for compatibility with a variety of power amplifiers
Programmable Home Theater Bypass function sets the pass-through gain to unity for integration of a home theater audio system via the RCA inputs
The second coaxial input can be reconfigured as a digital output; in output mode, any selected digital input, including USB, will pass through to the coaxial output
The sample-rate and word-length displays on the DAC2 HGC confirm the proper operation of your media player
USB system supports USB Audio 2.0, DSD, and USB Audio 1 and will follow sample rate changes initiated by the computer and/or the media playback software
The 12-volt trigger connection on the DAC2 HGC can be used as an input, output, or both, and 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 or respond to a 12-volt trigger and follow the actions of another audio component
The power switch can place the DAC2 HGC in standby, or full shut down. In full shut down, the unit will still respond to the trigger input and the IR remote control
Mute and Dim speaker functions available via the front plate or included remote control
The DAC2 HGC uses distributed power supply regulation. Each critical subsystem has at least one dedicated low-noise voltage regulator
New in this model:

  • Sample-rate display
  • Word-length display
  • More digital inputs (5 total)
  • More analog inputs (2 total)
  • More analog outputs (3 total)
  • Digital pass through
  • Native DSD conversion
  • Polarity Switch
  • Asynchronous USB 2.0
  • Driverless asynchronous USB 1.1
  • Home Theater Bypass
  • Bi-Directional 12 volt trigger
  • Power switch
  • Low power consumption
UPC: 837654830550
In the Box
Benchmark DAC2-HGC Digital to Analog Converter (Silver)
  • Power Cable
  • USB Cable
  • Remote Control
  • Limited 5-Year Warranty with Benchmark Online Registration
  • Table of Contents
    • 1Description

    Benchmark DAC2 HGC specs

    Audio Performance Specificationswyzwwabrxyzwzedwewzydxda
    Signal to Noise Ratio A-Weighted, 0 dBFS = 20 to 29 dBu:
    126 dB
    Unweighted, 0 dBFS = 20 to 29 dBu:
    123 dB
    Total Harmonic Distortion/Noise 1 kHz @ 0 dBFS:
    -109 dBFS, -109 dB, 0.00035%
    1 kHz at -1 dBFS:
    -110 dBFS, -109 dB, 0.00035%
    1 kHz at -3 dBFS:
    -113 dBFS, -109 dB, 0.00035%
    20 Hz to 20 kHz test tone at -3 dBFS:
    -112 dBFS, -108 dB, 0.00040%

    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Frequency Response @ Fs= 96 kHz:
    0 dB, -0.04 dB (20 to 20 kHz)
    -0.04 dB at 10 Hz
    -0.04 dB at 20 kHz
    -0.04 dB at 40 kHz
    -0.7 dB at 45 kHz

    @ Fs= 48 kHz:
    0 dB, -0.04 dB (20 to 20 kHz)
    -0.04 dB at 10 Hz
    -0.04 dB at 20 kHz

    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Crosstalk -116 dB at 20 kHz
    -130 dB at 1 kHz
    -137 dB at 20 Hz
    Jitter Maximum Amplitude of Jitter Induced Sidebands (10 kHz 0 dBFS test tone, 12.75 UI sinusoidal jitter at 1 kHz):
    < -144 dB
    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Max Amplitude Spurious tones with 0 dBFS test signal: < -138 dB
    Idle tones: < -147 dB
    AC line related hum & noise: < -140 dB
    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Differential Phase Inter-channel:
    Stereo pair at any sample rate: +/- 0.25° @ 20 kHz
    Between DAC2 HGC Units Fs < 110 kHz any sample rate:
    +/- 0.25° @ 20 kHz

    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Maximum Lock Time After Fs change: 400 ms

    Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu
    Soft Mute Ramp up/down time: 50 ms
    Mute Receive error: Yes
    Lock error: Yes
    Idle channel: No
    50/15 us De-Emphasis enable: automatic in consumer mode
    De-Emphasis method: Digital IIR
    De-Emphasis supported @: Fs = 32, 44.1, 48 kHz
    Latency Digital input to analog output (function of sample rate):
    1.36 ms at 44.1 kHz
    1.27 ms at 48 kHz
    0.90 ms at 88.2 kHz
    0.82 ms at 96 kHz
    0.51 ms at 176.4 kHz
    0.47 ms at 192 kHz
    Unbalanced Analog I/O
    Inputs 2x Stereo pair RCA
    Input Impedance 20 kΩ
    Maximum Input Level 19 dBu
    @ Factory-set calibration levels: 14 dBu
    Capacitors DC blocking on all analog inputs
    Transient and over-voltage protection on analog inputs:
    Series R and diode protection
    Input capacitance: 10 pF
    Gain Range Off to 0.5 dB (RCA in to RCA out)
    Off to 16.5 dB (RCA in to XLR out)
    Off to 10.5 dB (RCA in to headphone)
    Factory-Set gain in home theater bypass mode:
    0 dB (RCA in to RCA out)
    6 dB (RCA in to XLR out) (with 10 dB Pad)
    Outputs 4x RCA
    Output Impedance 30 Ω
    Output Clipping Level 13.5 dBu
    Output Level @ 0 dBFS:
    Off to 7.5 dBu
    Factory set home theater bypass output level (at 0 dBFS):
    < +/- 0.006 dB
    Balanced Analog Outputs
    Balanced Output 2x Gold-Pin Neutrik male XLR
    Output Impedance 60 Ω (attenuator off)
    425 Ω (attenuator = 10 dB)
    135 Ω (attenuator = 20 dB)
    Output Clipping Level 30 dBu
    Output level range (@ 0 dBFS) in 'Variable' mode:
    Off to 23 dBu (attenuator off)
    Off to 13 dBu (attenuator = 10 dB)
    Off to 3 dBu (attenuator = 20 dB)
    Output Level and Impedance Sample Rate (44.1 kHz versus 96 kHz): < +/- 0.006 dB
    Digital Audio I/O
    Digital Inputs Switchable between:
    1x USB 1.1 or 2.0
    2x TOSlink optical
    2x Coaxial
    Channels 2
    Frequency Range Coaxial: 28 Hz to 210 kHz
    TOSlink optical: 28 Hz to 96 kHz
    USB: 44.1, 48, 88.2, 96, 176.4, 192 kHz
    Word Length Maximum: 24-bits
    Input Impedance Coaxial input: 75 ͅ
    Capacitors DC blocking on digital inputs
    Transient and over-voltage protection
    Minimum Input Level Coaxial: 250 mVpp
    Jitter Tolerance with no measurable change in performance:
    >12.75 UI sine, 100 Hz to 3 kHz
    >1.5 UI sine at 20 kHz
    >1.5 UI sine at 40 kHz
    >1.5 UI sine at 80 kHz
    >1.5 UI sine at 90 kHz
    >0.25 UI sine above 160 kHz
    Attenuation method:
    Benchmark UltraLock2 on all inputs
    Outputs 2x 1/4" TRS
    Output Impedance < 0.11 Ω
    Output Level Control Stereo control on front panel
    Output Level Control @ 0 dBFS into 60 Ω:
    Off to 17 dBu
    Maximum Output Current 250 mA
    Overload Protection Current limited: 300 mA, thermal (independent per channel)
    Bandwidth > 500 kHz
    Total Harmonic Distortion/Noise -106 dB, 0.0005% into 30 Ω @ 18 dBu (1.26 W)
    Status Display
    Indicators 16x LED on front panel
    Selection Indication 1x Dim/mute
    7x Input
    1x Home Theater Bypass
    1x Polarity
    2x Word-length
    4x Sample Rate
    Compatibility Mac OSX
    Windows XP, Vista, 7
    USB port
    Operating Voltage Nominal Input Range (VAC RMS):
    100 to 240 V
    50 to 60 Hz
    Power < 0.5 W Idle
    12 W typical program
    15 W maximum
    Fuses 5x 20 mm (2 required)
    0.5 A 250 V Slo-Blo Type
    Operating Range Minimum/maximum (VAC RMS):
    90 to 260 Hz
    47 to 63 Hz
    Rack Size Width: 1/2 rack space
    Height: 1 RU
    Dimensions (DxWxH) 9.3 x 9.5 x 1.7" (237 x 249 x 45 mm)
    Weight 3 lb (1 kg)
    Packaging Infowyzwwabrxyzwzedwewzydxda
    Package Weight 5.1 lb
    Box Dimensions (LxWxH) 14.6 x 11.1 x 3.5"

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