Unmask Your Audio with the DAC1 USB

- a reference-quality, 2-channel 192-kHz 24-bit digital-to-analog audio converter featuring Benchmark's Advanced USB Audio™ technology, UltraLock™ clock system, and HPA2™ headphone amplifier.

DAC1 Heritage
The pristine audio path of the award-winning DAC1 has made it the Benchmark of stand-alone D/A converters. The DAC1 USB preserves the exact topology of this audio path while adding some of the most frequently requested features.

The DAC1 USB includes a very unique USB input with bit-transparent native 96/24 capability, a programmable mute function, programmable headphone gain range, an automatic standby/resume feature, and a high-current output stage designed to drive long cables or low-impedance loads, such as high-end power-amplifiers.

The DAC1 USB looks sounds and measures the same as the DAC1 with added benefits of convenience, flexibility, and performance.

Main Features:
• USB, XLR balanced, BNC coaxial, and TOSLINK optical digital inputs
• Compatible with Windows Vista/XP/2000 and Mac OS X without driver installation
• Elected low-impedance 10, 20, or 30 db pads on balanced outputs
• Jumper-selected low-impedance 10, 20, or 30 dB pads on balanced outputs
• -10 dBV unbalanced RCA analog outputs, +13.5 dBu maximum output level
• Two HPA2™ high-current, 0-Ohm, high-output 1/4" headphone outputs
• HPA2™ gain jumpers to match gain to headphone sensitivity
• Front-panel volume control for headphone outputs
• Front-panel volume control of all analog outputs (in "Variable" mode)
• Rear-panel "Variable/Calibrated" mode switch enables volume control of analog outputs
• Rear-panel "Variable/Calibrated" mode switch includes a mute position
• In "Calibrated" mode, levels are set by 10-turn trimmers (20 dB Range, 2 dB/turn)
• XLR outputs are preset to +4dBu at 0 dBFS in "Calibrated" mode (20-dB Pad enabled)"
• RCA outputs are preset to +2 Vrms (8.2 dBu) at 0 dBFS in "Calibrated" mode"
• Headphone jack 1 mutes XLR and RCA outputs (feature may be disabled)
• Benchmark's phase-accurate UltraLock™ technology for total jitter immunity
• 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
• THD+N = -107 dB, 0.00045% @ -3 dBFS input, -105 dB, 0.00056% @ 0 dBFS input
• Automatic de-emphasis in response to consumer pre-emphasis bit (44.1, 48, 88.2, and 96 kHz)
• Reliable and consistent performance under adverse operating conditions
• 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