Radial USB-Pro

Stereo USB Laptop Direct Box


Radial USB-Pro

The Radial USB-Pro is a high-resolution stereo digital audio converter and direct box that is designed to connect to any computer and seamlessly convert digital audio tracks to a pair of balanced analog outputs.

  • High Performance 24bit/96kHz digital audio converter
  • Plug & Play, no drivers required
  • 3.5mm headphone output to test signals
  • Balanced XLR outputs to feed a mixer or PA

Connect your laptop to a pro audio system

Whether you are playing backing tracks on stage, giving an audio presentation, or performing the role of DJ at an event, the USB-Pro is the easiest way to provide a high-quality noise-free connection between a laptop and any sound system. Made for plug-and-play simplicity, the USB-Pro will automatically be listed as an available sound card in the audio settings of all popular operating systems including Windows and Mac, with 24bit/96kHz digital to analog converters that retain the quality of the audio signal. A stereo pair of balanced XLR outputs allow you to connect to a microphone preamplifier, PA system, mixing console, or even a powered speaker, with onboard level control for quick and easy volume adjustments. Should any noise be encountered, ground lift switches are provided and isolation transformers can be inserted into the signal path to eliminate hum and buzz from ground loops, for a clean connection to the PA.

Audio circuit type: Custom decoder with analog line drive
Frequency response: 5Hz ~ 40kHz (30Hz ~ 18kHz with isolation)
Dynamic range: >90dB
Gain: +8dBu
Total harmonic distortion: 0.01%
Output Impedance: 250Ω nominal
Noise: -90dB
Maximum Output: +8dBu
Data Compression: Software compatibility: Windows XP/Vista/Win7/Win8/Win10 and Mac OS, Sound file compatibility: WDM, MME, CoreAudio, DirectSound, WASAPI and .WAV
Mono Sum, Ground lift, Level Control, Headphone
Input Connectors: USB connector B-type
Output Connectors: 2 x XLR-M, 3.5mm headphone output
Extras: USB 1.1 full speed, Sampling Rate: 44.1kHz / 48kHz / 96kHz auto sensing, 75dBu stereo separation
Construction: 14-gauge steel
Size (L x W x D): 5.0″ x 3.3″ x 2″ (127 x 84 x 48mm)
Weight: 1.5 lb (0.68kg)
Power: USB bus powered 500mA maximum
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable


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