Active Direct Box

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The dbx Di1 is a compact high-quality active direct injection box. Ideal for both studios and on the road, the Di1 will ensure audio signals reach their intended destination in both a balanced format and free from unwanted noise.

Connect the output from electric guitars, bass amplifiers, keyboards, etc., directly to a console mixer without the use of a microphone.

Built for toughness and reliability, the Di1 has all the features of a fully featured gig-ready workhorse DI unit.

Recommended for: Studio, Tour, Portable.


  • Level and impedance matching function
  • Output impedance: > 600 Ohms
  • Signal pass through connector
  • Output connector: XLR balanced
  • Battery LED indicator
  • Distortion: (THD) < 0.005% at 1kHz, 0dBu
  • Phantom power LED indicator
  • Max Input: +12dBu (at 0dB) Level +32dBu (at -20dB) +52dBu (at -40dB)
  • Output Noise: <-100dB unweighted
  • TS and XLR inputs and outputs
  • Frequency response: 10Hz to 70kHz, +0dB/-3dB
  • Attenuation control
  • Phantom Power: +18 volts DC to +48 volts DC
  • Ground lift switch
  • Main/Standby: 9V battery
  • Input Impedance: >250k Ohm
  • Metal Chassis
TS and XLR inputs and outputs
+12dBu (at 0dB) Level +32dBu (at -20dB) +52dBu (at -40dB)



Input Impedance > 250k Ohm
Max Input +12dBu (at 0dB) Level +32dBu (at -20dB) +52dBu (at -40dB)
Connectors Two Parallel 1/4" jack connectors and a parallel XLR connector (unbalanced), 1/4" Jack: Tip Hot, Sleeve Ground; XLR Jack: Pin 2 Hot, Pins 1 & 3 Ground
Output Impedance > 600 Ohms
Output Connectors XLR balanced
Distortion (THD) < 0.005% at 1kHz, 0dBu
Output Noise <-100dB unweighted
Frequency Response 10Hz to 70kHz, +0dB/-3dB
Main/Standby 9 Volt battery
Phantom Power +18 Volts DC to +48 Volts DC



Active Direct Box