Radial Engineering USB-Pro – Stereo USB Laptop DI with 24-bit Conversion

The Radial Engineering USB-Pro is a high-quality stereo USB DI box designed to connect any Mac or Windows computer directly to a professional PA system or mixing console. With plug-and-play operation, 24-bit/96 kHz digital audio conversion, dual XLR outputs, and built-in headphone monitoring, it delivers clean and reliable audio for live performances, presentations, DJ sets, and playback applications. Rugged Radial construction ensures years of noise-free operation on stage or on the road.

Key Features

• 24-bit / 96 kHz USB audio interface: High-resolution digital-to-analog conversion for clean, accurate playback.
• Stereo balanced XLR outputs: Feed professional mic or line inputs with level control for precise gain staging.
• Plug-and-play operation: Works instantly with Mac and Windows without drivers.
• Mono sum switch: Helpful for phase checks, mono PA systems, or splitting signals.
• Ground lift & transformer isolation: Eliminates hum and buzz caused by ground loops.
• Integrated headphone amp: Monitor your signal directly from the DI.
• Rugged 14-gauge steel housing: Radial’s bookend design protects connectors and switches.

Customer Benefits

The USB-Pro ensures your computer audio translates perfectly to any professional sound system. Whether you're a live performer, AV technician, DJ, or presenter, you get clean, hum-free playback with the reliability Radial is known for. No drivers, no power supply—just plug in and go.

Quick Specs

• Type: Passive USB stereo DI with digital conversion
• USB Input: USB Type-B (bus powered)
• Resolution: Up to 24-bit / 96 kHz
• Outputs: 2× XLR balanced (mic or line level)
• Controls: Output level knob, mono sum switch, ground lift
• Isolation: Optional transformer isolation via side switches
• Monitor: 3.5mm headphone output with volume control
• Construction: 14-gauge steel chassis with no-slip pad

What’s in the Box

• Radial Engineering USB-Pro
• USB cable
• User documentation

Use Cases / Ideal For

Live shows, corporate presentations, DJ playback, church services, AV installations, backing tracks, streaming, and computer-based audio playback.

Compatibility

Works with macOS and Windows without drivers. Connects to any mixer, PA system, powered speaker, or audio interface via standard XLR.

Pros & Cons

✅ Pros:

• High-quality 24-bit/96 kHz audio output
• Eliminates hum and noise through isolation
• Extremely rugged build for touring
• Built-in headphone monitoring
• No external power required

⚠️ Cons:

• Not a recording interface (playback only)
• Bulkier than lightweight consumer USB adapters

The Radial USB-Pro is the industry-standard USB DI for clean, noise-free computer audio on any stage—available now at Soundium.