Formula B Q Filter


Formula B

Mutron III inspired.

The New Formula QFilter is good on bass guitar or synth.

powered by a 9volt standard adapter or inside battery

switch on LED and true bypass footswitch.


  • Mode (LF/BP/LP) selects the type of filter: Lowfreq, Bandpass, Highpass
  • Peak Controls volume of the cutoff frequency
  • Gain adjusts the filter’s sensitivity to the signal of your instrument
  • Range (Low/High) selects the frequency range covered by the filter envelope
  • Drive (Down/Up) selects the direction of the filter sweep: down or upwards

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