The Radial USB-Pro is a professional high-resolution stereo USB direct box and digital-to-analog audio interface designed for connecting laptops and computers directly into professional live sound, theatre, broadcast, streaming, and AV systems. Built for touring and event production, the USB-Pro delivers clean, noise-free audio conversion with transformer-isolated balanced XLR outputs.
Key Features
Professional stereo USB direct box for laptops and computers
High-performance 24-bit digital audio converter (DAC)
Plug-and-play operation with no drivers required
Balanced XLR outputs for professional audio systems
Headphone monitoring output with level control
Transformer-isolated outputs with ground lift switches
Touring-grade Radial steel construction
Designed for Live Production & Events
The USB-Pro is ideal for:
Playback systems
Corporate presentations
Theatre productions
Live events and conferences
Streaming setups
DJ and multimedia playback
Broadcast and recording applications
Simply connect a laptop via USB and send clean balanced audio directly to:
Mixing consoles
PA systems
Powered speakers
Broadcast infrastructure
Audio interfaces
High-Quality 24-Bit Audio Conversion
The Radial USB-Pro features a high-resolution 24-bit DAC designed to deliver:
Clear and accurate audio playback
Low-noise signal conversion
Improved dynamic range
Professional-grade sound quality for live and studio use
The unit appears automatically as an available audio device on:
macOS
Windows
Most modern operating systems
No drivers or software installation required.
Built for Professional Audio Environments
The USB-Pro includes several tools specifically designed for professional production environments:
Stereo balanced XLR outputs
Adjustable output level control
3.5mm headphone monitoring output
Mono sum switch for mono PA systems or phase checking
Transformer isolation switches to eliminate hum and buzz
Ground lift switch for reducing ground loop noise
Touring-Grade Construction
Like all Radial products, the USB-Pro is engineered for demanding production environments with:
Heavy-duty steel chassis
Protective book-end design
Internal I-beam construction for PCB protection
No-slip isolation pad for electrical and mechanical isolation
Ideal Applications
The Radial USB-Pro is perfect for:
Laptop playback rigs
QLab and theatre playback systems
Corporate AV presentations
Live streaming setups
DJ playback systems
Hybrid event production
Video playback and multimedia systems
Broadcast audio integration
Technical Highlights
Stereo USB direct box
High-resolution 24-bit DAC
USB Type-B computer connection
Balanced XLR outputs
Headphone monitoring output
Mono sum switch
Transformer isolation
Ground lift switches
Plug-and-play operation
Why Choose the Radial USB-Pro
Reliable professional laptop audio interface for live production
Eliminates noisy unbalanced laptop outputs
Fast plug-and-play setup for events and theatre
Clean, isolated audio for professional PA systems
Industry-trusted Radial build quality and reliability