Instruction manual

DAC1 PRE Instruction Manual Rev I Page 4
Features
 Reference-quality 2-channel 192-kHz 24-bit digital-to-analog audio converter
 “System Preamp” (control amplifier) functions include input selection and volume control
 Designed to connect directly to power amplifiers and/or powered monitors and/or preamps
 6 stereo inputs – 1 analog (RCA), 1 computer (USB), 1 optical (TOSLINK), and 3 coaxial (RCA)
 4 stereo analog outputs – balanced (XLR), unbalanced (RCA), and 2 headphone outputs
 Rotary input selector switch with standby on/off function
 Two reference-grade HPA2™ “0-Ohm”, high-current, ¼” headphone outputs
 Front-panel volume control for headphone outputs
 Front-panel volume control of all analog outputs (in Variable mode)
 Rear-panel Variable/Calibrated switch selects the volume/mute mode of analog outputs
 In Calibrated mode, output levels are set by 10-turn trimmers (20 dB Range, 2 dB/turn)
 Benchmark’s AdvancedUSB Audio™ input supports high-resolution 96-kHz 24-bit digital audio
 AdvancedUSB™ is compatible with Windows and Mac computers without driver installation
 Coaxial and optical digital inputs support professional (AES) and consumer (S/PDIF) data
formats at up to 192-kHz, 24-bits
 Benchmark’s UltraLock™ technology eliminates jitter on 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 and error conditions
 Automatic Standby Mode – activated after 15 seconds of loss of digital input signal
 Instant wake-up from Standby Mode - no loss of audio
 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 (8 Watts typical program, 16 Watts peak)
 Meets FCC Class B and CE emissions requirements