The High Pass Filter is the perfect utility pedal for cleaning up the low end. The high pass filter is a 12 dB per octave low frequency filter. The knob controls the cutoff frequency and ranges continuously from 25 Hz to 190 Hz. The stock input impedance is 1MΩ. If you have an acoustic pickup that requires a specialized input impedance, write it in the notes during check-out, and we will accomodate the request at no extra cost. The output impedance is 100Ω. This device will work with active or passive instruments, as well as with other devices such as pedals, preamps, or effects loops.