The Active Direct Inject box shall provide a transformer balanced and isolated feed from a source input via a 1/4" TRS jack or 3-pin XLR-type connector. The output of the DI box shall be via an XLR connector. The unit shall also provide a 1/4" TRS jack in parallel with the input to act as a link for line bridging. The link shall be a direct feed from the input, or shall optionally be fed from an actively buffered input signal.


  • Input Impedance :- 1 mOhm (pad at 0dB), 47 kOhm (pad at -20dB or -40dB)
  • Max Input :- +9dBu (pad at 0dB), +29dBu (pad at -20dB), +49dBu (pad at -40dB)
  • Input Connectors :- Two Parallel 1/4" jack connectors (Tip Hot +ve, Sleeve ground), and a parallel XLR connector (unbalanced) (Pin 2 Hot +ve, Pin 1 & 3 ground)
  • Output Transformer :- Balanced
  • Max Output :- +8dBu into 600 Ohms or greater
  • Output Connectors :- XLR3-32 or equivalent
  • THD :- < 0.005% at 1khz, 0dbu output
  • Noise :- < -105db unweighted, 22hz-22khz, rms*
  • Frequency Response :- 30Hz to 20kHz, +0dB/-1dB
  • Main/Standby battery :- 9 volt PP3 type, preferably alkaline
  • Power Consumption on phantom :- less than 7.5mA, on battery: less than 2mA.
  • Phantom Power :- +20 volts DC to +48 volts DC