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. Radial's unique book-end design creates protective zones around the switches, connectors and controls to keep them out of harm's way. Inside, their 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.

Product Features

• Eliminates the Hum and Buzz from Computer Headphone/Line Outputs
• High-Performance 24bit/96k Stereo Direct Box
• Balanced Stereo Lo-Z Output Stays Noise-Free Even Over Long Cable Runs
• Connects to Your Laptop via USB
• Lets You Plug into Balanced Outputs via XLR Cables
• Driverless Automatic Install
• Built-In Headphone Amplifier for Monitoring

Technical Specifications

• Features: USB
• Active/Passive: Active
• # of Channels: 1
• Dimensions: 2" H x 5" W x 3.3" D
• Inputs: 1 x USB Type B
• Outputs: 2 x XLR
• Power Source: USB Bus Powered