DAC3 HGC 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)

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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

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Jitter Attenuation Method: Benchmark UltraLock3™ - all inputs

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Balanced Analog Outputs

Number of Balanced Analog Outputs: 2

Output Connector: Gold-Pin Neutrik™ male XLR

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Output Impedance: 60 Ohms (Attenuator off)

425 Ohms (Attenuator = 10 dB)

135 Ohms (Attenuator = 20 dB)

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Analog Output Clip Point: +30 dBu

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Factory Set Bypass Level (at 0 dBFS) +24 dBu (Attenuator = 0 dB)

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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)

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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

 

HPA2TM Headphone Outputs

Number of Headphone Outputs: 2

Output Connectors: ¼” TRS with switch on left-hand jack

Output Impedance: < 0.11 Ohms

Output Level Control

Stereo Control on Front Panel

Output Level Range (at 0 dBFS) into 60-Ohm Load

Off to +21.5 dBu (9.2 Vrms)

Output Power1.25 W into 30 Ohms

Maximum Output Current

250 mA

Overload Protection (independent per channel)

Current limited at 300 mA, Thermal

Bandwidth

> 500 kHz, -0.35 dB at 200 kHz

THD+N at 20 mW

-108 dB (0.0004%) into 300 Ohms, -100 dB (0.0010%) into 30 Ohms

 

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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Important Features

• 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