Digital converter - Benchmark

Model/varenr.: Benchmark DAC-1


Benchmark DAC1 - Digital to Analog Audio Converter

• 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 Ω
• 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 mount kit available
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.
Call today for pricing and availability.
With UltraLock™
2-Channel, 24-bit, 192-kHz, Digital-to-Analog Converter
5925 Court Street Road
Syracuse, NY 13206-1707
315-437-6300 Phone, 315-437-8119 Fax
...the measure of excellence!™
Audio Performance:
SNR – A-Weighted, (0 dBFS = +20 to +29 dBu): 116 dB
SNR – Unweighted, (0 dBFS = +20 to +29 dBu): 114 dB
SNR – A-Weighted at low gain, (0 dBFS = +9 to +18 dBu): 114 dB
THD+N, 1-kHz at 0 dBFS: -105 dBFS, -105 dB, 0.00056%
THD+N, 1-kHz at –1 dBFS: -107 dBFS, -106 dB, 0.00050%
THD+N, 1-kHz at –3 dBFS: -110 dBFS, -107 dB, 0.00045%
THD+N, 20 - 20-kHz tone @ –3 dBFS: -110 dBFS, -107 dB, 0.00045%
Frequency Response at Fs=48-kHz: +/- 0.1 dB (20 to 20-kHz)
-0.02 dB at 10 Hz
-0.20 dB at 20 kHz
Frequency Response at Fs=96-kHz: +/- 0.1 dB (20 to 20-kHz)
-0.02 dB at 10-Hz
-0.20 dB at 20-kHz
-0.85 dB at 40-kHz
-2.50 dB at 45-kHz
Crosstalk: -100 dB at 20-kHz
-125 dB at 1-kHz
-130 dB at 20-Hz
Maximum Amplitude of Jitter Induced Sidebands: < -141 dB
(10-kHz @ 0 dBFS test tone, 12.75 UI sinusoidal jitter at 1-kHz)
Maximum Amplitude of Spurious Tones with 0 dBFS signal: < -126 dB
Maximum Amplitude of Idle Tones: < -128 dB
Maximum Amplitude of AC line related Hum & Noise: < -126 dB
Interchannel Differential Phase (Stereo Pair): ± 0.5° at 20-kHz
Interchannel Differential Phase (DAC1s): ± 0.5° at 20-kHz
Maximum Lock Time – after Fs change: 100 mS
Soft Mute Ramp Up/Down Time: 10 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, and 96-kHz
Delay from digital input to analog output:
2.72 ms at 28-kHz
2.51 ms at 32-kHz
2.10 ms at 44.1-kHz
2.01 ms at 48-kHz
1.55 ms at 88.2-kHz
1.51 ms at 96-kHz
1.45 ms at 108-kHz
Input Operating Voltage Range – VAC RMS
115 V setting – 90 V min, 140 V max, 50-60 Hz
230 V setting – 175 V min, 285 V max, 50-60 Hz
8 Watts Idle, 8 Watts Typical Program, 16 Watts Maximum
½ Rack Wide, 1 RU High
8.5” (216 mm) Chassis Depth
9.33” (237 mm) Overall depth
9.5” (249 mm) Wide
1.725” (44.5 mm) High
DAC1 only: 3.5 lb.
DAC1 with cord and accessories: 4.5 lb.
Rack mount kit 0.32 lb.
Shipping weight: 7 lb.

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