DISC Benchmark DAC1 USB Digital to Analogue Converter, Black

Full Description

The DAC1 USB features Benchmark's Ultralock™ technology, which removes virtually all jitter on any digital input signal. It accepts any input frequency between 24 and 195kHz and is fully compatible with variable-pitch applications.

AdvancedUSB Audio™ technology supports 24-bit audio at up to 96kHz, and transfers every sample of digital audio from the computer to the DAC1 USB without modification. Compatible with Windows 7/Vista/XP/2000 and Max OS X, it is a true plug-and-play device that works without any need for drivers or software.

The HPA2™ headphone power amplifier is capable of driving a wide variety of headphone loads with less than 0.0003% distortion under load. It drives the DAC1 USB's two 1/4" headphone jacks. The gain control sets the output level of the headphone jacks, and also controls the output level of the balanced XLR and unbalanced RCA analogue outputs.

Features/Specifications:

Digital Inputs:

• Number of Digital Inputs (Switch Selected): 3 (XLR, Coaxial, Optical)
• Number of Audio Channels: 2
• Input Sample Frequency Range: 28 - 195kHz (XLR, Coaxial), 28 - 96kHz (Optical)
• Maximum Input Word Length: 24 Bits
• Digital Input Impedance on XLR Input: 110 Ohms
• Digital Input Impedance on Coaxial Input (Jumper Selected): 75 Ohms or Hi-Z (Bridging)
• Transformer Coupled Digital Inputs: Yes
• DC Blocking Capacitors on Digital Inputs: Yes
• Transient and Over-Voltage Protection on Digital Inputs: Yes
• Minimum Digital Input Level: 300mVpp on XLR, 150mVpp on Coaxial
• Jitter Tolerance (With No Measurable Change in Performance):
  • >12.75 UI Sine, 100Hz - 10kHz
  • >3.5 UI Sine at 20kHz
  • >1.2 UI Sine at 40kHz
  • >0.4 UI Sine at 80kHz
  • >0.29 UI Sine at 90kHz
  • 0.25 UI Sine Above 160kHz
• Jitter Attenuation Method: Benchmark UltraLock™

Balanced Analogue Outputs:

• Number of Balanced Analogue Outputs: 2
• Output Connector: Gold-Pin Neutrik™ Male XLR
• Output Impedance: 60 Ohms
• Output Level Calibration Controls: 10-Turn Trimmers
• Calibration Adjustability: 2dB / Turn
• Output Level Range (at 0dBFS) in Calibrated Mode:
  • +9dBu to +29dBu (Attenuator Off)
  • -1dBu to +19dBu (Attenuator = 10dB)
  • -11dBu to +9dBu (Attenuator = 20dB)
  • -21dBu to -1dBu (Attenuator = 30dB)
• Output Level Range (at 0dBFS) in Variable Mode:
  • Off to +27dBu (Attenuator Off)
  • Off to +17dBu (Attenuator = 10dB)
  • Off to +7 dBu (Attenuator = 20dB)
  • Off to -3dBu (Attenuator = 30dB)
• Output Level Variation with Sample Rate (44.1kHz vs 96kHz): < +/- 0.006dB

Unbalanced Analogue Outputs:

• Number of Unbalanced Analogue Outputs: 2
• Output Connector: RCA
• Output Impedance: 30 Ohms
• Output Level Calibration Controls: Shared with Balanced Outputs
• Output Level Range (at 0dBFS) in Calibrated Mode: -6dBu to +13.5dBu
• Output Level Range (at 0dBFS) in Variable Mode: Off to +11dBu
• Calibration Adjustability: 2dB / Turn
• Output Level Variation with Sample Rate (44.1kHz vs 96kHz): < +/- 0.006dB
• Factory Preset: 2vRMS (8.2dBu)

HPA2 Headphone Outputs:

• Number of Headphone Outputs: 2
• Output Connector: 1/4" TRS
• Output Impedance: 0 Ohms
• Output Level Control: Stereo Control on Front Panel
• Output Level Range (at 0dBFS) into 60 Ohm Load: Off to +21dBu