Instruction manual

DAC1 HDR Instruction Manual Rev I Page 3
Contents
Safety Information 2
Voltage Selection 2
Repairs 2
Fuses 2
Modifications 2
Contents 3
Features 4
Overview 5
DAC1 Heritage 5
Applications 5
HDR-VC™ 5
AdvancedUSB Audio™ 6
Jitter-Immune UltraLock™ 6
HPA2™ Headphone Amplifier 6
High-Current Output Drivers 6
‘Audio-Always’ Design Philosophy 6
Low-Noise Internal Power Supply 7
Phase-Accurate Multi-Track and 5.1 7
Automatic Digital De-Emphasis 7
Quick Start Guide 8
Audio Inputs 8
Remote Control 8
Volume Control Modes 9
Direct Interfacing to Power Amplifiers 9
Source Selector and ON/OFF Switch 9
Input Status Display 10
Mute on Headphone Insertion 10
Front Panel 11
Input Status Display 11
Error Indication 11
Source Selector and ON/OFF Switch 12
HPA2
TM
Headphone Jacks 12
HDR-VC™ Volume Control 13
Rear Panel 14
Analog Input – RCA Unbalanced 14
Computer Input – USB 14
Digital Input 1 – Optical 15
Digital Inputs 2, 3, and 4 - Coaxial 15
Output Level Switch 16
Balanced XLR Analog Line Outputs 16
Unbalanced RCA Analog Outputs 17
AC Power-Entry and Fuse Module 17
Internal Settings 18
Removing Top Cover 18
Low-Impedance Passive Pads 18
Calibration Trimmers 19
Jumpers 19
Rack Mounting 21
System1™ Universal Rack Adapter 21
Blank Rack Panel 21
Benchmark Technologies 22
HPA2™ Headphone Amplifier 22
UltraLock™ Clock System 22
AdvancedUSB Audio™ Technology 25
Performance Graphs 28
Frequency Response Tests 28
FFT Analysis of Idle Channel Noise 30
Multi-Unit Phase Response 31
THD+N Tests 32
Jitter Tests 37
Input Sensitivity Tests 40
Specifications 42
Audio Performance 42
Group Delay (Latency) 43
Analog Audio Inputs 44
Digital Audio Inputs 44
Balanced Analog Outputs 45
Unbalanced Analog Outputs 45
HPA2
TM
Headphone Outputs 46
Status Display 46
AC Power Requirements 47
Dimensions 47
Weight 47
Regulatory Compliance 48
FCC and RoHS Compliance Statements 48
CE Certificates of Conformity 1
CE Certificates of Conformity 49
Warranty Information 51
Benchmark 1 Year Warranty 51
Benchmark Extended Warranty 52