Radial USB PCDI Direct Box
The Radial Engineering USB-Pro is a game-changer in audio connectivity, designed to elevate your sound experience with seamless integration.

Introducing the Radial Engineering USB-Pro: Your Ultimate Stereo USB Laptop DI Solution

The Radial Engineering USB-Pro is a game-changer in audio connectivity, designed to elevate your sound experience with seamless integration and top-notch performance. This stereo USB laptop DI offers unparalleled versatility, reliability, and ease of use, making it the ideal solution for connecting your Mac or Windows computer to a PA system or mixing console.

Featuring high-resolution conversion capabilities, the USB-Pro ensures crystal-clear audio transmission, delivering pristine sound quality with every use. Its plug-and-play functionality means you can dive into your audio setup without hassle, while the integrated headphone amplifier allows for convenient signal monitoring directly from the DI, putting you in complete control of your sound.

Equipped with two balanced XLR 3-pin outputs, the USB-Pro provides flexibility in routing your audio signals. Whether you’re feeding mic- or line-level inputs, the unit’s handy level control empowers you to fine-tune your sound with precision. The auto-sensing USB input automatically configures the USB-Pro for digital input streams up to 24-bit / 96 kHz resolution, ensuring optimal performance in any audio environment.

One of the USB-Pro’s standout features is its ability to adapt to various audio scenarios effortlessly. Engage the mono switch to check for phasing, streamline your mixer setup by reducing channel count, or duplicate signals to the two XLR outputs with ease. Additionally, built-in side-panel switches allow for the insertion of isolation transformers into the signal path, effectively eliminating hum or buzz caused by ground loops. For further noise reduction, a ground-lift switch lifts pin 1 on the XLR outputs, ensuring pristine audio transmission in any situation.

Crafted with rugged 14-gauge steel construction and Radial’s signature bookend design, the USB-Pro is built to withstand the rigors of the road, guaranteeing reliability in any live performance or studio setting. Plus, the inclusion of a no-slip pad provides both mechanical and electrical isolation, ensuring stability and signal integrity even in demanding environments.

In summary, the Radial Engineering USB-Pro sets a new standard in audio connectivity, offering unparalleled versatility, reliability, and ease of use. Whether you’re a professional sound engineer, musician, or content creator, the USB-Pro is your ultimate companion for achieving pristine audio quality in any situation.


Additional information

Item Type Standard DI
Number of Channels Single-Channel
Active/Passive Active
Circuitry Solid-State
Ground Lift Yes
Polarity Reverse No
Low-Cut/High-Pass Filter No
Audio I/O 2x XLR 3-Pin Balanced Output 1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output
Frequency Response 5 Hz to 40 kHz (30 Hz to 18 kHz with Isolation)
Output Impedance 250 Ohms (XLR) 8 Ohms to 400 Ohms (Headphone)
Total Harmonic Distortion/Noise 0.01%
Signal-to-Noise Ratio -90 dB
Operating Voltage 5 V (USB Bus Power)
Dimensions 5 x 3.3 x 2"
Weight 1.5 lb

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