Stomp Under Foot The Pi pedal boutique fuzz based specifically on a late-‘70s Electro-Harmonix Big Muff Pi circuit. Handmade in the USA using vintage-style through-hole construction, delivering thick sustain, smooth mids, and classic singing Muff saturation with a slightly tighter and more articulate response than many modern reissues. Excellent for vintage rock, stoner, shoegaze, and soaring lead tones. With box.