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ARX Audibox USB DI Front and Rear Panel Views

The ARX USB DI is a true plug-and-play, professional, digital to analog audio interface that enables sound from a computer to be connected directly to any sound console via the computers USB port, eliminating the need to use any of the computer's existing audio outputs with all their inherent problems.

It features full transformer balanced output isolation to eliminate earth loops and the associated hum, and other extraneous noise and distortion, that is commonly experienced when connecting a computer to a sound system.

The USB DI installs onto the computer as a fully compatible generic USB audio device that is powered from the computer's USB port and requires no special driver software installation on Windows XP, Windows Vista, Windows 7 and Apple Mac OS X.

The USB DI is housed in a heavy duty, all-steel, chassis finished in attractive matt textured powdercoat paint with hard wearing epoxy screen printing and slip resistant rubber pads. It is ideal for interfacing any USB equipped computer (especially notebook computers) with the balanced inputs of professional sound systems.

The USB DI is perfect for schools, theatres and conference centres.


  • True Plug-and-Play Digital/Analog stereo audio interface.
  • USB bus powered, needs no power pack.
  • Industry standard balanced outputs with 3-Pin XLR connectors.
  • Transformer isolated outputs to eliminate earth loops.
  • Ground Lift Switch.
  • Front panel status LED indicates that the unit is connected and operating.
  • Kensington® lock slot.
  • Slip resistant rubber feet.
  • Rugged all-steel powdercoated enclosure.
  • Native Windows and Mac OS support, no driver software needed.
  • Hand made in Australia.

Schematic Diagram

ARX Audibox USB DI Schematic Diagram

Technical Specifications

Computer Connector USB type B
Output Connectors

Male XLR 3-Pin (one each for left & right channels)

Wired Pin 2 + Hot, Pin 3 – Cold,

Pin 1 via ground lift switch

Output Impedance 300 Ohms transformer balanced
Output Level Maximum nominal output level 0 dB
Noise USB - System dependent
  ISO transformer - Enviroment sensitive
Frequency Response 20 Hz to 20 kHz (+/- 0.5 dB)
Power Operating current via USB Port 80mA

All-steel powdercoated chassis, fibreglass PCB,

epoxy printing, slip-resistant rubber feet.


Width ..... 98 mm
Depth ..... 130 mm
Height ..... 42 mm
Weight .... n/a
  ARX Audibox USB DI Dimensions

Ordering Information

Description Order Code
ARX Audibox USB DI Audio Interface ARX-AUDIBOX-UDI
The information presented on this page is provided by courtesy of ARX Systems Pty Ltd.
Revised: 02-Aug-2011 Copyright (C) 2011 Adena Limited