Electro-Harmonix Bass Big Muff PiThe Prodigy reborn with underworld instincts comes to life wielding the drive of the original classic Big Muff Pi and the earthy support of a bass tailored design with no loss of low end. This is the pedal that bass players who loved the Big Muff sound have been waiting for. Specifications True bypass Tailor your drive distortion sound with sustain, tone and volume knobs A dry switch that mixes your dry bass with the Bass Big Muff Pi's distortion A