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Precision Tools for Audio Professionals


Model Options

Hand made in Australia

Dual Channel unit only
(Click on image to enlarge)



See the USB audio Knowledge Base
- IMPORTANT essential reading



Click Here to check out the reviews on this unique product!

Bus powered - requires no external power

More Audiboxes:




ISO Balancer DI

ISO Balancer
ISO Balancer-VC
ISO De-Balancer
ISO Later

ISO Splitter
ISO Combiner
ISO Optimizer
ISO Switcher

Q Switch

Pro DI
Ear Driver

DI-Plus RC
DI-Plus2 RC


In keeping with our aim of creating essential audio interfaces, ARX is excited to present the new ARX USB I/O - a true 24 bit High Resolution Plug and Play USB digital/analog pro audio interface. It removes the need to use any existing sound card outputs, with their inherent noisy environment and problematic grounding.

Based on the same expanded Audibox Plus platform as the DI Plus and Plus 2 Rechargeable Direct boxes, the ARX USB I/O features full transformer balanced Inputs and Outputs, providing the isolation required to eliminate earth loops / ground hum and other extraneous interaction noise and distortion.

Plug and Play

The USB I/O installs as a fully compatible generic USB audio device, requiring no special driver program installation on Mac OSX, Win XP, Windows 7 or 8

The front panel has Left and Right transformer balanced analog XLR Input and output connectors that connect to any standard balanced analog inputs and outputs. On the rear panel there is a Type B USB connector, as well as a ground lift switch. A status LED on the rear panel indicates that the USB I/O is connected and operating.

The USB I/O is housed in a heavy duty all-steel chassis finished in attractive matt textured powdercoat, with hardwearing epoxy screen printing and slip resistant rubber pads. It is ideal for interfacing any USB equipped computer (especially notebook/laptop computers) with the balanced inputs and outputs of professional sound systems.
Security features include Kensington®-type computer lock slot and optional bracket kit for under-table mounting.

The ARX USB I/O is available in Dual Channel format, includes a premium quality USB-A to USB-B cable, and is hand made in Australia

T E C H N I C A L || S P E C I F I C A T I O N S


USB I/O Schematic Diagram

 USB-I/O Specifications

Connector USB type B port

Codec 24 bit, High Resolution

Input Impedance 10 KOhms Transformer Balanced

Output Impedance 300 Ohms Transformer Balanced

Maximum Input Level Nominal 0 dB

Maximum Output Level Nominal 0 dB

Input/Output Noise
USB - System dependent
ISO transformer - Enviroment sensitive

Frequency Response 20 - 20 KHz ± 0.5 dB

Power Operating current via USB Port 80mA

Input Connectors
2 x Female XLR, wired Pin 2 + Hot, Pin 3 – Cold. Pin 1 via ground Lift switch

Output Connectors
2 x Male XLR, wired Pin 2 + Hot, Pin 3 – Cold. Pin 1 via ground Lift switch

All-steel polyurethane coated chassis, fibreglass PCB, epoxy printing,
slip-resistant rubber base. Package includes a premium quality USB-A to USB-B cable

System Requirements

  • Windows PC running Windows XP, Windows 7 or 8, Mac running OS X or later
  • USB port
  • Audio software installed

98SE will need the Win 98SE CD Rom to install driver. However, in reality if you're serious about music you'll already be using a later operating system

Click Here for the ARX USB Knowledge Base

Click Here for Audibox USB DI info for Win XP

Click Here for Audibox USB DI info for Win 7

Click Here for Audibox USB DI info for Win 8

Win 98SE Install information


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