* High performance 24bit digital audio
* Ready to use without the need of a driver
* 3.5mm analog
headphone output to check signal
* Balanced Lo-Z outputs with switchable
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
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.
"The Radial USB-Pro is the greatest and most useful device to
come along in recent years. With the advent of more and more video playback and
computer backing tracks that are now prevalent in touring, I find that I cannot
live without these units anymore."
(The Rolling Stones, Fleetwood Mac, Joe Cocker, Tina