The Electro-Harmonix Deluxe Big Muff Pi is an expanded, highly-tweakable version of the classic Pi fuzz. Taking the ubiquitous sound of the standard Big Muff and adding a whole new world of control, the Deluxe Big Muff Pi goes where vintage Muffs simply cannot. A sweepable mid-shift EQ with separate switch lets you stomp into cutting tones for solo sections, offering a different texture from your standard sound. You can even plug in an expression pedal to control the center frequency and get a moving filter happening on the fly. An attack control brings clarity back to your sound, even at extreme gain levels. Little too much noise in your signal? Bring the onboard gate to the party and tame it with ease. Also switchable on the Deluxe Big Muff Pi are a fixed bass boost and a high/low gain setting, making this version of the Muff the most versatile yet.