Benchmark DAC3L   (no remote)

Benchmark DAC3L (no remote)

Benchmark DAC3L (no remote)

Starting from £2,249.00
Normally ships 5-9 days
Only %1 left
SKU
016813

The DAC3 is the latest D/A converter from Benchmark. Following on from the DAC1 and DAC2, the DAC3 adheres to Benchmark’s brand philosophy of no-compromise, class leading design, offering performance revered by professional recording studios and enjoyed by discerning audiophiles alike.

The new DAC3 implements the ESS Technology ES9028PRO chip, achieving lower THD+N, 2nd and 3rd harmonic distortion compensation, improved power management, over sampling filters and, when combined with Benchmark’s UltraLock3™ technology, near instantaneous input switching and phase locked loop, with undetectable jitter. The improvements don’t stop there though, with greater dynamic range and a wider frequency response, the specifications eclipse those of the DAC2.

The DAC3 L model offers analogue pre amplifier inputs but removes the dual headphone amplifier found in the HGC. The DAC3 DX, removes the analogue pre amplifier section to accommodate an AES digital input but retains the dual headphone amplifier.

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.

Hi-Fi Preamplifier

The DAC3 includes the input selection, volume control, and output buffering functions of a traditional hi-fi "preamplifier". Like a traditional preamplifier, the DAC3 is specifically designed to drive power amplifiers, but the DAC3 carries this concept to perfection. The high-current output stage of the DAC3 can be programmed to match the input sensitivity of your power amplifier. This unique feature optimizes the interface between the DAC and your power amplifier, giving you the highest-possible system performance.

The DAC3 provides the cleanest, most direct path to your power amplifier. No additional "preamplifier" is required or recommended unless your system includes a turntable. If so, your phono preamplifier should be connected to one pair of analogue line-level inputs.

In any system, the most transparent performance will always be achieved when the DAC3 is connected directly to a power amplifier.

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.

This experience of "being there" cannot be created by systems that are designed to add warmth or colour to the music.

  • Sample Rate Display
  • Word Length Display
  • 5 Digital Inputs
  • 2 Stereo Analog Inputs (2 RCA)
  • 3 Stereo Analog Outputs (2 RCA, 1 XLR)
  • 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
  • ES9028PRO Converter

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 = +27 dBu

128 dB

SNR – Unweighted, 0 dBFS = +27 dBu

126 dB

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

-137 dB at 20 Hz

-130 dB at 1 kHz

-116 dB at 20 kHz

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 Set Bypass Level (at 0 dBFS)

+24 dBu (Attenuator = 0 dB)

Output Level Range (at 0 dBFS) In ‘Variable’ Mode

Off to +27.5 dBu (Attenuator off)

Off to +17.5 dBu (Attenuator = 10 dB)

Off to +7.5 dBu (Attenuator = 20 dB)

Output Level Variation with Sample Rate (44.1 kHz vs. 96 kHz)

< +/- 0.006 dB

 

UNBALANCED ANALOG OUTPUTS

Number of Unbalanced Analog Outputs

4

Output Connector

RCA

Output Impedance

30 Ohms

Analog Output Clip Point

+13.5 dBu (3.7 Vrms)

Factory Set Home Theater Bypass Output Level (at 0 dBFS)

+8.2 dBu (2 Vrms)

Output Level Range (with 0 dBFS digital input)

Off to +11.7 dBu (3 Vrms)

Output Level Variation with Sample Rate

< +/- 0.006 dB

  

STATUS DISPLAY

Indicators - Type and Location

16 LED’s on Front Panel

Selection/Status Indication

1 – Dim/Mute

1 - Polarity
6 – Input
2 – Bypass/Calibrated Output
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
15 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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