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Benchmark DAC3 B Digital to Analog Converter (Silver)

 
  • Dale #:

    BENC-50014800730
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Description

The DAC3 B is the ideal converter to use in front of Benchmark's HPA4 headphone amplifier or LA4 line amplifier. It is also ideal for many professional studio applications. It delivers the full performance of the flagship DAC3 HGC, but eliminates the volume control, the analog inputs, the mute an... Read More

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Description

The DAC3 B is the ideal converter to use in front of Benchmark's HPA4 headphone amplifier or LA4 line amplifier. It is also ideal for many professional studio applications. It delivers the full performance of the flagship DAC3 HGC, but eliminates the volume control, the analog inputs, the mute and polarity controls, and the headphone amplifier.

The DAC3 B is a professional reference-grade audio digital to analog converter with a fixedgain output. The DAC3 B supports 24-bit D/A conversion of PCM at sample rates up to 192 kHz. It also supports direct conversion of 1- bit DSD at a 2.8224 MHz sample rate. It is designed to be very transparent and this makes it well-suited for critical monitoring in studio control rooms and mastering rooms.

Features:

  • Fixed Gain Calibrated Outputs - XLR outputs are calibrated to +24 dBu at 0 dBFS (pads at 0 dB), RCA outputs are calibrated to 2 Vrms at 0 dBFS (calibration is equivalent to "HT MODE" or "CALIBRATED MODE" on other DAC3 models)
  • CONTROL LOCK - Disables keypad and remote control to prevent accidental changes
  • Low-Impedance Passive Output Pads - 0, 10, and 20 dB - optimize output level to power amplifiers and other downstream devices to maximize system SNR
  • SABRE PRO - 32-bit PCM D/A conversion system, four 32-bit D/A converters per channel
  • SABRE PRO - Native DSD D/A conversion system, four 1-bit DSD D/A converters per channel
  • Benchmark UltraLock3™ Jitter Attenuation System - eliminates jitter-induced distortion
  • High Headroom DSP - provides 3.5 dB of analog and digital headroom above 0 dBFS to completely eliminate the clipping of intersample peaks
  • Multi-Mode Asynchronous USB Audio 2.0 - 24 bit/192 kHz, DSD (DoP 1.1)
  • Driverless Asynchronous USB Audio 1.1 - 24-bit/96 kHz
  • Sample Rate Display - displays the measured sample rate, and format (PCM or DSD)
  • Word Length Display - displays the measured word length
  • 2 Coaxial Digital Inputs - 24-bit/192 kHz PCM, DSD (DoP 1.1)
  • 2 Optical Digital Inputs - 24-bit/96 kHz PCM
  • 1 Coaxial Digital Output - digital pass through from USB, Coax, and optical inputs when function is enabled
  • 2 Stereo Analog Outputs - 1 pair balanced (XLR), plus 1 pair unbalanced (RCA)
  • IR Remote with metal housing provides control of all functions (optional)
  • Automatic De-Emphasis - automatically responds to consumer pre-emphasis bit (44.1, 48 kHz)
  • 12V Trigger I/O - bi-directional 12V trigger can act as input, output, or both
  • AUTO-ON Function - can be programmed to turn on when AC is applied
  • Power Switch - very low standby power , <0.5 W at 120 VAC
  • High-Efficiency Low-Noise Power Supplies - only 12-15 W, 88-264 VAC, 47-63 Hz
  • Meets FCC Class B and CE emissions requirements
  • Tested for immunity to radiated and conducted RF interference

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Product Specs

Audio Performance
Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu (unless noted)
SNR – A-Weighted, 0 dBFS = +24 dBu 125 dB, 128 dB relative to intersample peaks
SNR – Unweighted, 0 dBFS = +24 dBu 123 dB, 126 dB relative to intersample peaks
THD+N, 1 kHz at 0 dBFS -113 dBFS, -113 dB, 0.00022%
THD+N, 1 kHz at -1 dBFS -114 dBFS, -113 dB, 0.00022%
THD+N, 1 kHz at –3 dBFS -119 dBFS, -116 dB, 0.00016%
THD+N, 20 to 20 kHz test tone at –3 dBFS -113 dBFS, -110 dB, 0.00032%
Frequency Response at Fs=192 kHz +0 dB, -0.015 dB (20 to 20 kHz) -0.015 dB at 10 Hz -0.005 dB at 20 kHz -0.031 dB at 40 kHz -0.15 dB at 80 kHz
Frequency Response at Fs=48 kHz +0 dB, -0.015 dB (20 to 20 kHz) -0.015 dB at 10 Hz -0.005 dB at 20 kHz
Crosstalk -116 dB at 20 kHz -130 dB at 1 kHz -137 dB at 20 Hz
Maximum Amplitude of Jitter Induced Sidebands (10 kHz 0 dBFS test tone, 12.75 UI sinusoidal jitter at 1 kHz) < -144 dB
Maximum Amplitude of Spurious Tones with 0 dBFS test signal < -138 dB
Maximum Amplitude of Idle Tones < -147 dB
Maximum Amplitude of AC line related Hum & Noise < -133 dB
Inter-channel Differential Phase (Stereo Pair – any sample rate) +/- 0.25 degrees at 20 kHz
Inter-channel Differential Phase (Between DAC3 Units Fs<110 kHz) Any sample rate. +/- 0.25 degrees at 20 kHz
Maximum Lock Time after Fs change 6 ms
Soft Mute Ramp Up/Down Time 9.6 ms
Mute on Receive Error Yes
Mute on Lock Error Yes
Mute on Idle Channel No
50/15 us De-Emphasis Enable Automatic in Consumer Mode
De-Emphasis Method Digital IIR
De-Emphasis Supported at Fs = 32, 44.1, 48 kHz
Group Delay (Latency)  
Delay – 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
Digital Audio Inputs  
Number of Digital Inputs (switch selected) 5 (1 USB, 2 Optical, 2 Coaxial)
Number of Channels 2
Input Sample Frequency Range 28 to 210 kHz (Coaxial Inputs) 28 to 96 kHz (Optical Inputs) 44.1, 48, 88.2, 96, 176.4, 192 kHz (USB Input)
Maximum Input Word Length 24 bits
Digital Input Impedance 75 Ohms (Coaxial Inputs)
DC Blocking Capacitors on Digital Inputs Yes (Coaxial Inputs)
Transient and Over-Voltage Protection on Digital Inputs Yes (Coaxial Inputs)
Minimum Digital Input Level 250 mVpp (Coaxial Inputs)
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
Jitter Attenuation Method Benchmark UltraLock3™ - all inputs
Balanced Analog Outputs  
Number of Balanced Analog Outputs 2
Output Connector Gold-Pin Neutrik™ male XLR
Output Impedance 60 Ohms (Attenuator off) 425 Ohms (Attenuator = 10 dB) 135 Ohms (Attenuator = 20 dB)
Analog Output Clip Point +30 dBu
Factory Calibration (at 0 dBFS) +24 dBu (Attenuator off)
Output Level Variation with Sample Rate (44.1 kHz vs. 96 kHz) < +/- 0.006 dB
Unbalanced Analog Outputs  
Number of Unbalanced Analog Outputs 2
Output Connector RCA
Output Impedance 30 Ohms
Analog Output Clip Point +13.5 dBu (3.7 Vrms)
Factory Calibration (at 0 dBFS) +8.2 dBu (2 Vrms)
Output Level Variation with Sample Rate < +/- 0.006 dB
Status Display  
Indicators - Type and Location 12 LED’s on Front Panel
Selection/Status Indication 1 – Control Lock 5 – Input 2 – Word length 4 – Sample Rate
AC Power Requirements  
Nominal Input Operating Voltage Range (VAC RMS) 100 – 240V
Frequency 50-60 Hz
Power < 0.5 Watts Idle
12 Watts Typical Program
13 Watts Maximum
Fuses 5 x 20 mm (2 required)
0.5 A 250 V Slo-Blo® Type
Min/Max Operating range (VAC RMS) 90 – 260 VAC
47 – 63 Hz
Dimensions  
Form Factor ½ Rack Wide, 1 RU High
Depth behind front panel 8.5” (216 mm)
Overall depth including connectors but without power cord 9.33” (237 mm)
Width 9.5” (249 mm)
Height 1.725” (44.5 mm)
Weight  
DAC3 only 3 lb.
DAC3 with remote control, power cord, extra fuses, and manual 4 lb.
Shipping weight 7 lb.

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