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Precision Tools for Audio Professionals

i-DI Portable Media Active Direct Box



Dual Channel unit



  • Corporate A.V Presentations
  • Seminars
  • System Demos and Testing
  • Musicians
  • D.Js
    and many more
Requires Phantom 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

i-DI "Portable Media" Active Direct Box.

Tablets and Smart Phones have rapidly become the audio source of choice for Corporate A.V Presentations, Seminars, System Demos and Testing, Musicians, D.Js and many other audio system users.

Designed by the ARX Engineering team to fill the market niche for a Portable Transformer Isolated Active Direct Box interface, the new i-DI I connects all of today's (and tomorrow's) Tablets and Smart Phone devices to the Pro Audio world via a permanently anchored flying heavy duty input cable with a genuine Amphenol pro series minijack connector.

Ultra low noise and distortion circuitry, plus electronically Balanced XLR outputs complete the i-DI package.

i-DI Features

  • Phantom powered - no batteries to go flat during use
  • The i-DI does not use the digital interface cable, so many portable media devices are able to still charge while playing
  • Full Transformer Ground isolation eliminates Ground Loop hum and Power Supply noise from AC chargers, PSU, 'Wall warts' etc
  • Electronically Balanced Outputs with ultra low (<10 Ohms) output impedance lets you drive long cable runs without signal loss
  • Load compensated and RF filtered Input ensures low distortion signal transfer
  • An Audio Ground lift switch is also fitted, to optimise Pin 1 output connection. Switch in or out as required.
  • Ultra low distortion (.004% 0dB out) circuitry, with a Frequency Response of 20 Hz to 20 KHz ±1dB
  • The i-DI is fitted into a Heavy duty all-steel chassis finished in attractive textured white powdercoat, with hardwearing epoxy screen printing and slip resistant rubber base pad
  • Security features include Kensington®-type computer lock slot and optional bracket kit for under-table mounting.


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

  i-DI Rear View

Max Input Level
    +12 dB

Input Impedance     10 KOhm

Max Output Level (nominal)
                                +12 dB 10K Ohm load using Phantom power

Output Impedance     10 Ohms Balanced

Output Signal to Noise -90 dB unweighted, -96 dB A weighted

Dynamic Range         102 dB 10K Ohm load using 12 VDC Power Supply

Distortion                    0.004%, 0db out

Frequency Response  20Hz to 20KHz, ± 1 dB

Gain through Unit       6dB

Power Requirements 30 to 48V Phantom power on XLR pins 2 and 3

Input Connector         Flying input cable (500mm) with genuine Amphenol pro series minijack connector.

Output Connectors     Left and Right 3 pin XLR. Wired Pin 1 Ground, Pin 2 + Hot, Pin 3 - Cold.
                                  Audio Ground (Pin 1) lift switch fitted

Construction              All-steel powdercoated chassis, fibreglass PCB

Precision engineered
Most of the Audibox range share a common footprint and manufacturing platform. Offset lid screws enable close side-by-side mounting of multiple units.

Click on image at Right to see larger version

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