Darkglass Electronics Harmonic Booster: Clean Bass Preamp Effect Pedal
Flat -20dB to +20dB cut or boost
Allows blending in the perfect amount of the tone-shaping circuitry. It can be set counter-clockwise for a flatter frequency response
+-20dB @ the frequency selected by "Mid Frequency"
Mid frequency from 250Hz to 2.5kHz
+-20dB @ 80 Hz
+-20dB @ 5 kHz
75x111x43 mm (2.95x4.37x1.77 in)