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Radial USB Pro Stereo Direct Box

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Product Description

The Radial USB-Pro is a high-resolution stereo direct box designed to convert sound files from a laptop computer and seamlessly transfer them to a pair of balanced audio outputs to feed a PA, recording or broadcast mixing console.

Radial USB Pro Stereo Direct Box Features

  • - High performance 24bit/96k stereo direct box
  • - Automatically installs without the need of a driver
  • - Built-in headphone amplifier for monitoring
  • - Balanced Lo-Z outputs with switchable isolation
Made to be plug and play easy to use, the USB-Pro automatically configures itself for use with all popular operating systems including Mac OSX, Windows XP, Vista and Windows 7, thus eliminating the need to load special drivers. Unlike devices that are limited with 16 bit, 44.1kHz conversion rates, the USB-Pro elevates the performance with true 24 bit, 96kHz stereo converters to deliver more headroom and greater detail. This eliminates the need for additional sound cards or separate converters when transferring files, further streamlining production in busy work environments.

Connection from the laptop is done via the 'pro-audio standard ' USB type-B port. Digital-to-analog conversion is monitored with the built-in headphone amplifier to ensure the signal is being properly downloaded and converted. A mono-sum switch may be engaged to check for phasing or facilitate signal distribution to two outputs should this be preferred. One simply sets the output volume control to suit. Should hum or buzz caused by ground loops be encountered, two 'set & forget' side-access switches let you insert isolation transformers into the signal path to block stray DC voltage offsets. To further reduce susceptibility to noise, this is augmented with a ground lift switch that lifts pin-1 on the two XLRs.

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 otherwise cause premature part failure. Finally, a full bottom no-slip pad provides mechanical isolation and electrical insulation, further advantaging the user.

Product Specifications
Radial USB Pro Stereo Direct Box Specifications
  • Audio circuit type: Custom decoder with analog line drive
  • USB compliance: USB 2.0 full speed
  • Bit depth: 24bit (16bit capable)
  • Sampling rate: 96kHz (44.1kHz / 48kHz auto sensing)
  • Sound file compatibility: WDM, MME, ASIO, CoreAudio and DirectSound
  • Software compatibility: Windows XP/Vista/Win7 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
  • 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
  • Power: USB bus powered 500mA maximum
  • Construction: 14 gauge steel chassis and outer shell, baked enamel finish
  • 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
Helpful Info about the Manufacturer
Phone:  604-942-1001 Warranty:  3 Year Transferrable
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MSRP: $260.00
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$229.99
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