DI Box

DI Box
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Availability: In Stock
Model: USB I/O
Manufacturer: ARX
Average Rating: Not Rated

ARX - Audibox USB I/O

Bus powered USB transformer balanced Input and Output interface




In keeping with our policy of creating essential audio interfaces, ARX is excited to present the new ARX USB I/O - a true 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 ARX USB I/O installs as a fully compatible generic USB audio device, requiring no special driver program installation on Mac OSX, Win XP, Vista and Win7.


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






Connector USB type B port


Codec 16 bit, 48 Khz


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 powdercoated chassis, fibreglass PCB, epoxy printing,
slip-resistant rubber feet



System Requirements


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



                                USB I/O Schematic Diagram

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DI Box
Click to enlarge