ARX i-DI Portable Media Active Direct Box Transformer Isolated stereo Active

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

  • Being Phantom powered, there are no batteries to go flat during use
  • The i-DI does not use the digital interface cable, so many portable media devices are still able to be charged 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.


* Corporate A.V Presentations

* Seminars

* System Demos and Testing

* Musicians

* D.Js

* and many more


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

All-steel powdercoated chassis, fibreglass PCB