UPC/EAN #676101040599     MPN #R800 1050    

$329.99

Save 16.7%, MSRP $396.00
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Digital USB DI for laptops, 24/96 with heapdhone amp & isolated outs



USB-Pro is a high-resolution stereo digital audio converter (DAC) and direct box that is designed to connect to any computer system to seamlessly transfer digital audio to analog.

A stereo pair of balanced XLR audio outputs with adjustable level control then feeds the signal to a microphone preamplifier, PA system, mixing console or even a powered speaker! Made for plug and play simplicity, the USB-Pro will automatically be listed as an available sound card in the audio settings in all popular operating systems including Windows XP, Windows 7/8, and Mac OSX.

Connection to a computer is accomplished through a standard USB type-B port. Digital-to-analog conversion can be monitored on headphones through the 3.5mm analog output to check signal quality and level before connecting to a sound system. A mono-sum switch may be engaged to check for phasing or for connection to a mono system. Should hum or buzz caused by ground loops be encountered, two recessed side-access switches allow the user to insert isolation transformers into the signal path. To further reduce susceptibility to noise, this is augmented with a ground lift switch that lifts pin-1 on both XLR jacks.

As with all Radial products, the USB-Pro is designed to handle the rigors of professional touring. Our unique book-end design creates protective zones around the switches, connectors and controls to keep them out of harm's way. Inside, our time-tested I-beam construction assures the sensitive internal PC board will not torque, which could cause premature part failure. Finally, a full bottom no-slip pad provides mechanical isolation and electrical insulation to ensure quiet operation.
  • High performance 24bit digital audio converter
  • Ready to use without the need of a driver
  • 3.5mm analog headphone output to check signal
  • Balanced Lo-Z outputs with switchable isolation
  • Audio circuit type: Custom decoder with analog line drive
  • USB compliance: USB 2.0 full speed
  • Bit depth: 24bit (16bit capable)
  • Sampling rate: 44.1kHz / 48kHz / 96kHz auto sensing
  • Sound file compatibility: WDM, MME, CoreAudio and DirectSound
  • Software compatibility: Windows XP/Vista/Win7/Win8 and Mac OS
  • Frequency response: 5Hz ~ 40kHz (30Hz ~ 18kHz with isolation)
  • Dynamic range: >90dB
  • Noise floor: -90dB
  • Maximum gain: +8dBu
  • Total harmonic distortion: 0.01%
  • Stereo separation: 75dBu
  • Output impedance: 300 nominal

  • Features
  • Digital input: USB connector B-type
  • Analog output: Stereo balanced mic level (2 x XLR-M)
  • Headphone output: 3.5mm TRS
  • Level control: Variable, works on headphone and XLR outputs
  • Isolation: Switchable for each channel
  • Mono switch: Sums left & right inputs to mono
  • Ground lift: Lifts pin-1 on both XLR outputs

  • General
  • Power: USB bus powered 500mA maximum
  • Finish: Durable powder coat
  • Size: 3.3" x 5.0" x 2" (84 x 127 x 48mm)
  • Weight: 1.5 lb (680 g)
  • FCC approval: Complies with section 15 of the FCC Rules
  • Conditions: For use in dry locations only between 5°C and 40°C
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