The Radial 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.
Features
- 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
Specifications
- 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: 300Ω nominal
- 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
Brand reference number:
SRA USB-PRO
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