Radial USB-Pro – Stereo USB Laptop Direct Box with 24-bit/96kHz DAC and XLR Outputs (R800-1050-00)
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The Radial USB-Pro is a high-performance stereo USB direct box designed to seamlessly connect your laptop or desktop computer to a professional audio system. Featuring 24-bit/96kHz digital-to-analog conversion, transformer isolation, and balanced XLR outputs, the USB-Pro is a reliable plug-and-play interface for stage, studio, or corporate presentations.
Whether you're performing with backing tracks, DJing live, or running AV for a conference, the USB-Pro ensures clean, noise-free playback from your computer to the PA. With no drivers required and broad OS compatibility, it's an essential tool for any tech-savvy performer, sound engineer, or presenter.
Key Features
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High-Resolution 24-bit/96kHz Audio – Delivers crystal-clear playback quality
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Balanced XLR Outputs – For easy connection to mixing consoles or powered speakers
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Plug-and-Play Simplicity – Works with Windows and macOS without drivers
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Built-in Headphone Amp – Monitor your signal instantly on-site
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Transformer Isolation – Eliminates hum and buzz from ground loops
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Mono Sum & Ground Lift – Ideal for troubleshooting and simplified routing
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Rugged Steel Construction – Road-ready durability in a compact footprint
Why Choose the USB-Pro?
The USB-Pro is built for professionals who demand flawless audio quality and reliable connectivity. Unlike budget interfaces, it includes Radial’s renowned transformer isolation to prevent noise issues in live sound environments. It’s perfect for musicians, AV technicians, and anyone needing a hassle-free audio bridge between laptop and PA.
From club stages to boardrooms, this DI box ensures your digital content is heard exactly as intended—with clarity, balance, and zero setup fuss.
Specifications
| Feature | Details |
|---|---|
| Audio Circuit Type | Custom decoder with analog line drive |
| Frequency Response | 5Hz – 40kHz (30Hz – 18kHz with isolation) |
| Dynamic Range | >90dB |
| Max Output | +8dBu |
| Gain | +8dBu |
| Total Harmonic Distortion | 0.01% |
| Output Impedance | 250Ω nominal |
| Noise | -90dB |
| Sampling Rates Supported | 44.1kHz / 48kHz / 96kHz (auto sensing) |
| Data Format Compatibility | WDM, MME, CoreAudio, DirectSound, WASAPI, .WAV |
| Operating System Compatibility | Windows XP through 10, macOS (no drivers required) |
| Inputs | USB Type-B |
| Outputs | 2 x XLR (balanced), 3.5mm headphone out |
| Chassis | 14-gauge steel |
| Dimensions | 127 x 84 x 48 mm (5.0" x 3.3" x 2") |
| Weight | 0.68 kg (1.5 lbs) |
| Power | USB bus-powered (500mA max) |
| Operating Environment | 5°C to 40°C, dry locations only |
| Additional Features | Ground lift, mono sum, headphone out, level control |
| Warranty | Radial 3-year transferable |