The Electro Harmonix Bass Big Muff Pi Distortion delivers all the chaotic fuzz tones bassists crave out of their rig. Whether youre setting the foundation for a monstrous mix or unleashing high-gain bass solos to truly showcase your playing – the Bass Big Muff serves as an unrelenting powerhouse to your sound. Equipped with a trio of tone and volume controls youve got complete freedom to shape your sound how you want it. Craft a subtle grit into your playing with a small amount of sustain or let the fuzz run wild by cranking it to the maximum. Whatever your preferred style is the Big Muff can do it all. Topped off with a unique signal switch players can even select a bass-boosted option for even more thundering tone. Just hit the switch and experience the power of the Big Muff… Specifications Model Name: Electro Harmonix Bass Big Muff Pi Distortion Model Code: BASS BM Pedal Type: Distortion/Fuzz Switching: True Bypass Controls: Volume Tone Sustain Dry Switch Power: 9-Volt Battery (included) 96DC-200BI power supply (optional)