Benchmark DAC2 DX Instruction Manual

Benchmark DAC2 DX Instruction Manual Reference Stereo D/A Converter Native PCM and DSD Conversion Headphone Amplifier Dual Output Buses Asynchron

DAC2 DX Instruction Manual Rev B Page 10 DAC2 vs. DAC1 The DAC2 series builds upon Benchmark’s highly success

DAC2 DX Instruction Manual Rev B Page 11 DAC2 DX Features Feature List Ÿ HGC™ (Hybrid Gain Control) – combin

DAC2 DX Instruction Manual Rev B Page 12 Special DAC2 DX Features The DAC2 DX has some special features that

DAC2 DX Instruction Manual Rev B Page 13 Feature Details UltraLock2™ Clock System UltraLock2™ provides the ou

DAC2 DX Instruction Manual Rev B Page 14 feel, and convenience of an analog control while providing the accur

DAC2 DX Instruction Manual Rev B Page 15 Direct Interfacing to Power Amplifiers All Benchmark DAC1 and DAC2 c

DAC2 DX Instruction Manual Rev B Page 16 DAC1 and DAC2 Product History The pristine audio performance of the

DAC2 DX Instruction Manual Rev B Page 17 DAC2 Series History The DAC2 series represents a complete redesign o

DAC2 DX Instruction Manual Rev B Page 18 Digital Inputs There are six stereo digital audio connectors on the

DAC2 DX Instruction Manual Rev B Page 19 USB - Computer Input The USB input supports 44.1, 48, 88.2, 96, 176.

DAC2 DX Instruction Manual Rev B Page 2 Contents Safety Information 4 Fuses 4 Voltage Selection 4 Power C

DAC2 DX Instruction Manual Rev B Page 20 The DAC2’s USB AUDIO 1.1 MODE provides driverless operation with Win

DAC2 DX Instruction Manual Rev B Page 21 The Coax inputs are DC isolated, current limited, and diode protecte

DAC2 DX Instruction Manual Rev B Page 22 Analog Outputs The DAC2 DX has two independent stereo output busses.

DAC2 DX Instruction Manual Rev B Page 23 XLR Wiring The DAC2 uses industry-standard XLR wiring: · XLR pin 2

DAC2 DX Instruction Manual Rev B Page 24 AC Power-Entry and Fuses Fuses CAUTION: FOR CONTINUED FIRE HAZARD P

DAC2 DX Instruction Manual Rev B Page 25 Internal Settings Jumper-Configured Options The following functions

DAC2 DX Instruction Manual Rev B Page 26 XLR Output Pads The XLR outputs are equipped with low-impedance pass

DAC2 DX Instruction Manual Rev B Page 27 Headphone Switch Configuration: The DAC2 is configured so that the M

DAC2 DX Instruction Manual Rev B Page 28 Headphone Attenuation Jumpers (JP3 and JP4): The gain range of the H

DAC2 DX Instruction Manual Rev B Page 29 Figure 4 - 10 dB Headphone Attenuation - (Factory default) Figure

DAC2 DX Instruction Manual Rev B Page 3 Unbalanced Analog Outputs 66 HPA2TM Headphone Outputs 67 Status Dis

DAC2 DX Instruction Manual Rev B Page 30 Digital Pass-Through Function Coaxial connector D5 is factory config

DAC2 DX Instruction Manual Rev B Page 31 Rackmounting Options The DAC2 DX is available with or without rackmo

DAC2 DX Instruction Manual Rev B Page 32 Premium ½-Wide Blank Rack Panel This premium ¼" thick blank pa

DAC2 DX Instruction Manual Rev B Page 33 Rackmounting Example Blank Plate and Connector Block: The Connector

DAC2 DX Instruction Manual Rev B Page 34 Benchmark Technologies Hybrid Gain Control™ "HGC" is Bench

DAC2 DX Instruction Manual Rev B Page 35 The USB sub-system remains active when the DAC2 is powered down. Th

DAC2 DX Instruction Manual Rev B Page 36 HPA2™ Headphone Amplifier The DAC2 headphone output is driven by Be

DAC2 DX Instruction Manual Rev B Page 37 Fortunately, interface jitter has absolutely no effect on the audio

DAC2 DX Instruction Manual Rev B Page 38 can add a low and mid frequency ‘muddiness’ that was not in the orig

DAC2 DX Instruction Manual Rev B Page 39 What UltraLock™ converters cannot do: UltraLock2™ converters cannot

DAC2 DX Instruction Manual Rev B Page 4 Safety Information Fuses CAUTION: FOR CONTINUED FIRE HAZARD PROTECTIO

DAC2 DX Instruction Manual Rev B Page 40 USB Audio System Setup Plug it in and Start Listening… Immediately B

DAC2 DX Instruction Manual Rev B Page 41 USB Driver Installation - Windows XP, Vista, 7 Note: The DAC2 driver

DAC2 DX Instruction Manual Rev B Page 42 2. A welcome screen will pop-up. Click “Next.”

DAC2 DX Instruction Manual Rev B Page 43 3. When you see the following screen, turn on the DAC2, and select

DAC2 DX Instruction Manual Rev B Page 44 Press “Install”

DAC2 DX Instruction Manual Rev B Page 45 5. When the installation begins you will see the following screen.

DAC2 DX Instruction Manual Rev B Page 46 7. Click “Finish.” The Setup will close automatically and this comp

DAC2 DX Instruction Manual Rev B Page 47 Performance Graphs - DAC2 Series The following graphs were produced

DAC2 DX Instruction Manual Rev B Page 48 Graph Plot 2 - LOW FREQUENCY FFT - AC LINE-RELATED HUM The DAC2 sho

DAC2 DX Instruction Manual Rev B Page 49 Graph Plot 3 - FFT 10 kHz The 10 kHz FFT analysis is an excellent t

DAC2 DX Instruction Manual Rev B Page 5 Quick Start Guide Rear Panel Analog Audio Outputs The DAC2 DX has thr

DAC2 DX Instruction Manual Rev B Page 50 Graph Plot 4 - FFT 1 kHz The 1 kHz FFT analysis demonstrates the lo

DAC2 DX Instruction Manual Rev B Page 51 Graph Plot 5 - FREQUENCY RESPONSE This plot demonstrates the ruler-

DAC2 DX Instruction Manual Rev B Page 52 Graph Plot 6 - Differential Phase This plot demonstrates the inter-

DAC2 DX Instruction Manual Rev B Page 53 Graph Plot 7 - Balanced THD+N vs. Amplitude This plot demonstrates

DAC2 DX Instruction Manual Rev B Page 54 Graph Plot 8 - Unbalanced THD+N versus Amplitude This plot shows th

DAC2 DX Instruction Manual Rev B Page 55 Graph Plot 9 - Headphone Amplifier – THD+N versus Amplitude This p

DAC2 DX Instruction Manual Rev B Page 56 Graph Plot 10 - THD+N vs. FREQUENCY 80 kHz The analog output stages

DAC2 DX Instruction Manual Rev B Page 57 Graph Plot 11 - EVEN AND ODD THD vs. FREQUENCY This plot demonstrat

DAC2 DX Instruction Manual Rev B Page 58 Graph Plot 12 - THD vs. Frequency - All Outputs This plot demonstra

DAC2 DX Instruction Manual Rev B Page 59 Graph Plot 13 - THD+N versus Sample Rate The THD+N performance of t

DAC2 DX Instruction Manual Rev B Page 6 Front Panel Power Switch Press once to turn on. Press once to turn o

DAC2 DX Instruction Manual Rev B Page 60 Graph Plot 14 - JITTER TOLERANCE The Audio Engineering Society (AES

DAC2 DX Instruction Manual Rev B Page 61 Graph Plot 15 - JITTER TOLERANCE FFT This figure shows an series o

DAC2 DX Instruction Manual Rev B Page 62 Graph Plot 16 - IMD 11k 12K This plot demonstrates that the DAC2 ha

DAC2 DX Instruction Manual Rev B Page 63 Specifications Audio Performance Fs = 44.1 to 96 kHz, 20 to 20 kHz B

DAC2 DX Instruction Manual Rev B Page 64 Audio Performance (continued) Maximum Lock Time after Fs change 400

DAC2 DX Instruction Manual Rev B Page 65 Jitter Tolerance (With no Measurable Change in Performance) &g

DAC2 DX Instruction Manual Rev B Page 66 Balanced Analog Outputs Number of Balanced Analog Outputs 2 Output C

DAC2 DX Instruction Manual Rev B Page 67 HPA2TM Headphone Outputs Number of Headphone Outputs 2 Output Conne

DAC2 DX Instruction Manual Rev B Page 68 AC Power Requirements Nominal Input Operating Voltage Range (VAC RM

DAC2 DX Instruction Manual Rev B Page 69 Regulatory Compliance FCC and RoHS Compliance Statements

DAC2 DX Instruction Manual Rev B Page 7 Output Calibration Lights If a CALIBRATION light is on, the correspon

DAC2 DX Instruction Manual Rev B Page 70 CE Certificate of Conformity

DAC2 DX Instruction Manual Rev B Page 71 Warranty InformationBenchmark 1 Year Warranty T

DAC2 DX Instruction Manual Rev B Page 72 Benchmark Extended Warranty The Benchmark Ex

DAC2 DX Instruction Manual Rev B Page 73 Copyright © 2007, 2008, 2009, 2012, 2014 Benchmark Me

DAC2 DX Instruction Manual Rev B Page 8 Control Functions All DAC2 DX functions can be controlled from the I

DAC2 DX Instruction Manual Rev B Page 9 Applications The DAC2 DX is a professional reference-grade digital to