Radial USB-Pro Stereo USB DI

A stereo USB DI that takes a laptop straight to two balanced XLR outputs at 24 bit and 96 kHz, with a headphone output for cueing. Hire across Gold Coast and Brisbane.

Type	Stereo USB direct box and digital audio converter
Resolution	24 bit, 96 kHz (44.1 and 48 kHz auto sensing)
Analog Output	Stereo balanced mic level, 2x XLR male
Digital Input	USB type B
Frequency Response	5 Hz to 40 kHz (30 Hz to 18 kHz with isolation)
Dynamic Range	Better than 90 dB
Noise Floor	-90 dB
THD	0.01 percent
Headphone Output	3.5 mm TRS
Ground Lift	Lifts pin 1 on both XLR outputs
Power	USB bus powered, 500 mA maximum, USB 2.0 full speed
Construction	14 gauge steel, baked enamel finish
Dimensions	84 x 127 x 48 mm
Weight	680 g
Brand	Radial

Downloads Spec Sheet (PDF)

View the USB-Pro Stereo USB DI at Radial Engineering

Overview

About the Radial USB-Pro

A laptop headphone socket is not a professional output, and every event that has ever gone through one has paid for it in noise, level and the moment somebody unplugs it. The USB-Pro takes the audio off the machine digitally over USB and converts it at 24 bit and 96 kHz to two balanced XLR outputs at mic level, which is what a console actually wants.

Typical applications

Presentation and video playback audio at conferences and launches
Backing tracks and click from a musical director's laptop
DJ sets running off software
Streaming and hybrid event playback into a live system
Any laptop feed where the ground loop has already started buzzing

Digital out means no analog problems

Because the signal never leaves the computer as analog, there is no laptop output stage adding noise and no headphone volume control to be found at the wrong setting. Sample rates at 44.1 and 48 kHz are detected automatically, so a presenter's video plays back at pitch without anyone configuring anything.

Isolation and cueing

A ground lift drops pin 1 on both XLR outputs to kill a loop between the laptop's power supply and the stage. The 3.5 mm headphone output lets an operator cue the next track or confirm a video has audio before it hits the room.

Hire the USB-Pro

Bus powered, so it needs nothing but the USB cable. Available across the Gold Coast, Brisbane and South East Queensland. See the rest of the audio control range.