Passive DI
PDB4
4-Channel Passive Direct Box

The PDB4 is a four channel passive direct box that features four quality fully transformer isolated direct boxes in a 1U 19-inch rack mount chassis.

Inputs and outputs of each of the four channels are isolated to maximize channel separation. Transformer isolation on each output helps to eliminate system ground loops.

It is a rock solid, roadworthy interface for connecting outputs of electronic musical instruments (or other audio sources) to the balanced inputs of mixer consoles and other balanced audio products.

The PDB4 also allows connection of a music source to an instrument amplifier while simultaneously patching it to a mixer.

  • Four Fully Isolated Channels
  • Switchable Input Attenuation
    (0dB, -20dB , -40dB)
  • 50k ohm Instrument/Line Input
  • 50k ohm Parallel Link Jack
  • 600 ohm XLR Output Jack
  • Switchable Ground Lift
  • 1U 19-inch Chassis
Frequency Response 10 Hz - 50 kHz +/- 0.5dB @ +4dBu
Input Connections ¼-inch TS unbalanced
Output Connections XLR male balanced
Input Impedance 50k Ω
Output Impedance 600 Ω
Ground Lift Switchable
Input Attenuation Switchable (0dB, -20dB, -40dB)
Chassis Type All steel black finish
Power Requirements None Totally Passive
Dimensions 1.75" x 19" x 6" (44.5mm x 483mm x 152mm)
Weight 6.5 lbs. (2.95 kg)
This is beta software, use at your own risk!
PDB4 - 4-Channel Passive Direct Box
PDB4 - 4-Channel Passive Direct Box
PDB4 - 4-Channel Passive Direct Box