192kHz

Review Quote: 
"Giant-Killer"
Name of Reviewer: 
Paul Seydor
Name of Magazine: 
The Absolute Sound
Review Date: 
Mon, 07/12/2010

DAC1 HDR Quote

Buy Now

Benchmark’s DAC1 PRE is a reference-quality, stereo monitor controller featuring DAC1’s award-winning D-to-A conversion system, proprietary AdvancedUSB™ input, jitter-immune UltraLock™ technology, and HPA2™ headphone amplifier.  The DAC1 PRE delivers pristine, seamless monitor interfacing and volume control, and interfaces with almost every type of digital and analog source.

The Dynaudio BM 5A’s are small-footprint (7.3” x 12.5” x 12.5”) active, near-field studio monitors designed for professional recording studios.  Each monitor is bi-amplified with two independent 50 W amplifiers and a custom designed active crossover circuit. 

Dynaudio has become renowned for their progressive approach to designing drivers and speaker electronics.  After years of successful speaker development for the audiophile community, the company established a subsidiary, Dynaudio Acoustics, to offer their expertise to the world of professional audio.  Today, many major recording and production studios around the world employ and trust Dynaudio Acoustics monitors.

The Sennheiser HD headphones have become some of the most popular among headphone enthusiasts and audio professionals.  The HD650’s are the latest and greatest design in this lineage of high-resolution headphones.  The oversized ear pieces and open-back design enable comfortable listening for hours and hours.

Benchmark’s Canare Starquad balanced analog cables use professional grade components and hand-assembly to achieve superior performance.  Canare L-4E6S Starquad balanced analog conductor for ultra-low capacitance, superior noise rejection, and extended lifespan.  The XLR connectors are made by Neutrik, the accepted professional standard.  They utilize silver pins, and are soldered with silver solder.   


DAC1 Complete Stereo Solution Components

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Home and/or Office System

The Complete Stereo Solution is an ideal playback system for those rooms that don’t require mid or far-field speaker systems.  The ease and simplicity of the Complete Stereo Solution allow even the technical novice to achieve high-definition audio with their DVD, CD, TV, radio, or computer system.  The elegant packaging of these components melds into the décor of any room.

Recording Studio; Video and/or Audio Editing Suite

Benchmark digital converters, Dynaudio loudspeakers, and Sennheiser headphones regularly see heavy use in major recording studios all over the world.  The Complete Stereo Solution offers this world-class performance in a form-factor that suits both recording studios and small-footprint editing suites.  The transparent, revealing nature of this system won’t let any audio glitches slip by unnoticed.  The jitter-free, low-distortion performance makes listening fatigue a non-issue – alleviating a real concern during hours of recording, editing and mixing. 


DAC1 Complete Stereo Solution Applications

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Review Quote: 
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Name of Reviewer: 
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Review Date: 
Thu, 02/14/2002

DAC1 Awards

DAC1 Reviews

5/10/2008 - Audiophile Audition, by John Sunier, Read Review
12/2007 - 10 Audio, Read Review
09/2006 - Positive Feedback, by Robert H. Levi, Read Review
06/2005 - SixMoons.com, by Srajan Ebaen, Read Review
05/29/2005 - Camera Hobby, by Edwin Leong, Read Review
04/01/2005 - Enjoy the Music, by Dick Olsher, Read Review
03/02/2005 - The Audio Critic, by Peter Aczel, Read Review
10/2004 - SoundStage, by Doug Schneider, Read Review
05/2004 - Resolution Magazine, by Rob James, Read Review
07/20/2003 - Stereophile, by John Marks, Read Review
11/2003 - Home Theater High Fidelity, by Jason Victor Serinus, Read Review

DAC1 Reviews

All Products Designed and Manufactured in the USA

Products

  
By Category
Converters

Digital Audio Converters

Analog

Analog Audio Converters


Microphone Preamps

Microphone Preamps

Headphone Amplifiers

Headphone Amplifiers

Distribution

Distribution & Line Amplifiers

  
By Series
System 1

System 1


The System 1000™

System 1000™

MicroFrame™

MicroFrame™

The IFA Series

Legacy Series

Products

Accessories

RM Coupler Buy Now

Rack Mount Coupler
Joins 2 1RU high, 1/2RU wide units such as the DAC1 , ADC1 , & PRE1 $50.00

Blank RM Panel Buy Now

Blank RM Panel
Rackmount panel for 1RU high, 1/2RU wide space $30.00

Blank RM Panel Buy Now

RM Kit
RM Coupler & Blank RM Panel for mounting a 1/2RU wide unit in 1RU wide space

Blank RM Panel Buy Now

BNC-to-RCA Cable, 0.5m
1/2 meter Coaxial male to RCA male digital audio cable $20.00

Blank RM Panel Buy Now

BNC-to-RCA Cable, 1m
1 meter coaxial BNC male to RCA male digital audio cable $20.00

Blank RM Panel Buy Now

BNC Female -to- XLR Male Adaptor
Converts coaxial BNC female to XLR male $30.00

Blank RM Panel Buy Now

BNC Male -to- RCA Female Adapter
Converts a coaxial BNC male to RCA female $5.00

ADC1 USB - Accessories

Buy Now
Analog Audio Inputs
Number of Inputs (balanced) 2
Connector Gold-Pin Neutrik™ female XLR
Impedance 200 k O
Sensitivity -14dBu to +29 dBu (at 0 dBFS)

Clock Reference Input
Format Auto-detect AES/EBU, Word Clock, and Super Clock (256x)
Impedance 75 O
Sensitivity 150 mV AES
200 mV Word Clock
750 mV Super Clock
Transformer Coupled Yes
DC Blocking Capacitors Yes
Transient and Over-Voltage Protection Yes
Jitter Attenuation Method Benchmark UltraLock

Wordclock Reference Output
Impedance 75 O
Level 5 Vpp
2.5 Vpp into 75 O
Transformer Coupled No
DC Blocking Capacitors No
Transient and Over-Voltage Protection Yes

Digital Audio Outputs
Number of Digital Outputs 1 XLR Main
1 TOSLINK Main
1 BNC Main
1 BNC Aux
1 USB
Connectors Gold-Pin Neutrik™ male XLR
Number of Audio Channels 2
Main Output Word Length 24 bits
Main Output Sample Frequencies 44.1, 48, 88.2, 176.4, or 192 kHz
Aux Output Word Length 16 or 24 bits
Impedance 110 O XLR
75 O BNC
Level 4 Vpp into 100 O XLR
1 Vpp into 75 O BNC
Transformer Coupled Yes
DC Blocking Capacitors Yes
Transient and Over-Voltage Protection Yes

Audio Performance

Fs = 44.1 to 192 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu (unless noted)
SNR - A-Weighted, 0 dBFS = +8 to +29 dBu 121 dB
SNR - Unweighted, 0 dBFS = +8 to +29 dBu 119 dB
SNR - A-Weighted at max gain, 0 dBFS = -14 dBu 108 dB
THD+N, 1 kHz at -1 dBFS -102 dBFS, -101 dB, 0.00089%
THD+N, 1 kHz at -3 dBFS -107 dBFS, -104 dB, 0.00063%
THD+N, 20 to 20 kHz test tone at -3 dBFS -106 dBFS, -103 dB, 0.00071%
Frequency Response at 192 kHz Sample Rate -3 dB, +0 dB, 2 Hz to 92 kHz
+/- 0.01 dB, 20 Hz to 20 kHz
-0.06 dB at 10 Hz
-0.01 dB at 20 Hz
-0.00 dB at 20 kHz
-0.18 dB at 88 kHz
-3 dB at 92 kHz
-100 dB at 108 kHz
Frequency Response at 96 kHz Sample Rate -3 dB, +0 dB, 1 Hz to 46 kHz
+/- 0.01 dB, 20 Hz to 20 kHz
-0.06 dB at 10 Hz -0.01 dB at 20 Hz
-0.00 dB at 20 kHz -0.10 dB at 44 kHz
-3 dB at 46 kHz -108 dB at 54 kHz
Frequency Response at 48 kHz Sample Rate 3 dB, +0 dB, 1 Hz to 23 kHz
+/- 0.01 dB, 20 Hz to 20 kHz
-0.06 dB at 10 Hz
-0.01 dB at 20 Hz
-0.00 dB at 20 kHz
-0.10 dB at 22 kHz
-3 dB at 23 kHz
-110 dB at 27 kHz
Passband Ripple +/- 0.008 dB
Crosstalk -105 dB at 20 kHz
-130 dB at 1 kHz
-130 dB at 1 kHz
-200 dB at 20 Hz
Jitter Tolerance
(With no Measurable Change in Performance)
>12.75 UI sine, 100 Hz to 10 kHz
>3.5 UI sine at 20 kHz
>1.2 UI sine at 40 kHz
>0.4 UI sine at 80 kHz
>0.29 UI sine at 90 kHz
>0.25 UI sine above 160 kHz
Maximum Amplitude of Jitter Induced Sidebands < -134 dB with
10 kHz 0 dBFS test tone
12.75 UI sinusoidal jitter at 1 kHz
(measurement limit)
Maximum Amplitude of Spurious Tones with 0 dBFS test signal -130 dBFS
Maximum Amplitude of Idle Tones -145 dBFS
Maximum Amplitude of AC line related Hum & Noise -130 dBFS
Interchannel Differential Phase
(Stereo Pair)
+/- 0.5 degrees at 20 kHz
Interchannel Differential Phase
(Between ADC1 Units)
+/- 0.5 degrees at 20 kHz
Maximum Lock Time after Fs change < 1 s for frequency lock
< 5 s for phase lock
Mute on Sample Rate Change Yes
Mute on Loss of External Clock No
Mute on Lock Error No
Mute on Receive Error No
Soft Mute Ramp Up/Down Time 10 ms

Group Delay (Latency)
Delay (Analog Input to Digital Output) 1.20 ms at 44.1 kHz
1.09 ms at 48 kHz
0.75 ms at 88.2 kHz
0.67 ms at 96 kHz
0.63 ms at 176.4 kHz
0.59 ms at 192 kHz

LED Status Indicators
LED Location Front Panel
Mode Indicators 9 green
Meter 14 green, 2 yellow, 2 red

AC Power Requirements
14 green, 2 yellow, 2 red 110 V setting - 95 V min 140 V max
220 V setting - 190 V min, 285 V max
Frequency 50-60 Hz
Power 16 Watts Idle
16 Watts Typical Program
20 Watts Maximum
Fuses 5 x 20 mm (2 required)
110 V setting - 0.5 A 250 V Slo-Blo® Type
220 V setting - 0.5 A 250 V Slo-Blo® Type

Dimentions
Form Factor 1/2 Rack Wide, 1 RU High
Depth behind front panel 8.5" (216 mm)
Overall depth including connectors
without power cord or BNC-to-RCA adapter
9.33" (237 mm)
Width 9.5" (249 mm)
Height 1.725" (44.5 mm)

Weight
ADC1 only 3.6 lb.
ADC1 with power cord, 3 BNC-to-RCA adapters, extra fuses, and manual 4.9 lb.
Rack mount kit (blank panel, junction block, and rack-mount screws) 0.32 lb.
Shipping weight 7 lb.

ADC1 USB - Specifications

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