The input signal is not overdriving the input of filter, the signal gets overdriven and then, it is going gently into the filter, so its not sounding like the well known "filter overdrive" sound, but more like a polished and controllable overdrive followed by clean filter. The filter's cutoff is cv controllable at the 3,5 jack input, this input is also compatible with the use of an expression pedal.

 

Technical 

• Size:

  Hammond1590BB
• Face plate material:

  Die Cast Aluminium
• Power supply:

  25mA