Instruction manual
DAC1 HDR
Instruction Manual Rev I Page 4
Features
Reference-grade stereo system pre-amplifier with infrared remote control
HDR-VC™ (High Dynamic Range Volume Control) - custom Alps motorized potentiometer
Built-in DAC1 digital-to-analog audio conversion system - 2-channel, 24 bit/192 kHz
Built-in HPA2™ reference-grade headphone amplifier - “0-Ohm”, high-current
Built-in AdvancedUSB™ Computer Audio Interface – native 24 bit/96 kHz
Remote control features: on/off, input select, volume, dim, and mute
Dim and soft-mute levels are easily set by the user via remote control
Stereo inputs – 1 analog (RCA), 1 computer (USB), 1 optical (TOSLINK), and 3 coaxial (RCA)
Stereo analog outputs – balanced (XLR), unbalanced (RCA)
Rotary input selector switch with standby on/off function
Front-panel volume control for headphone outputs (and all analog outputs in Variable mode)
Rear-panel switch selects the Variable/Mute/Calibrated volume mode of analog outputs
Switch-selectable Calibrated mode - output levels are set by 10-turn trimmers
Benchmark’s AdvancedUSB Audio™ input supports high-resolution 24-bit/96-kHz digital audio
AdvancedUSB™ is compatible with Windows and Mac computers without driver installation
Coaxial digital inputs support professional (AES) and consumer (S/PDIF) data formats at up to
24-bits/192-kHz
Optical digital inputs support professional (AES) and consumer (S/PDIF) data formats at up to
24-bits/96-kHz
Benchmark’s UltraLock™ technology eliminates jitter from all digital inputs (including USB)
Jumper-selected low-impedance 10, 20, or 30 dB pads on balanced outputs
HPA2™ gain jumpers for customizing headphone output gain for headphone sensitivities
Left-most headphone jack auto-mutes XLR and RCA outputs (feature may be disabled)
Status LED’s - display input selection, mute, dim, standby, and error conditions
Automatic de-emphasis in response to consumer pre-emphasis bit (44.1, 48, 88.2, and 96 kHz)
115 V, 230 V, 50-60 Hz international power supply with very wide operating range
Low radiation toroidal power transformer significantly reduces hum and line related interference
Low power consumption (16 Watts peak at 120 VAC)
Meets FCC Class B and CE emissions requirements