Benchmark DAC1 User Manual

Benchmark Media Systems, Inc.
DAC1
Instruction Manual
2-Channel 24-bit 192-kHz
Audio Digital-to-Analog Converter

Benchmark DAC1 Specifications

General

Type	DAC
Inputs	Optical
Outputs	RCA, XLR, 1/4" Headphone
Sample Rate	Up to 192 kHz
Bit Depth	24-bit
THD+N	< 0.001%
Power Supply	100-240V AC, 50/60 Hz

Summary

Feature Summary

Front Panel Interface

Front Panel Controls and Indicators

Covers status LEDs, input selector, gain control, and headphone jacks.

Rear Panel Interface

Output Level and Calibration

Controls output level switch and calibration potentiometers.

Safety Warnings

Important cautions regarding output level settings and speaker connection.

Analog and Digital Inputs/Outputs

Analog Output Specifications

XLR and RCA output impedance, levels, and wiring.

Digital Input Types

DAC1 Specifications

Digital Input Parameters

Analog Output Parameters

Specifications for balanced and unbalanced analog outputs.

Headphone Output Parameters

Audio Performance Metrics

Signal-to-Noise and Distortion

Frequency Response and Delay

Jumper Settings and Configuration

Input Source Select Jumper (P2)

XLR Output Attenuation Jumpers

Compliance and Safety Information

FCC Class B Compliance

General Safety Information

Warranty Information

Warranty Terms and Repair Notes

Understanding UltraLock™ Technology

How Jitter Affects Converters

Details on how clock jitter degrades audio conversion performance.

DAC1 Performance Curves

48 kHz Frequency Response

Interface Jitter Tolerance Test

Jitter Amplitude and Frequency Test

Cable Jitter Immunity Test