🎶 Elevate Your Sound Game with the Big Muff Pi! A classic pedal that every guitarist needs in their arsenal. Comes with a 9V battery, so you can plug in and play right away. Adjustable tone control for a personalized sound experience. Experience singing sustain with an attitude that turns heads. Deliver crushing distortion that elevates your performance. Sustain & Distortion Adjustable Tone 9V Battery Included The Electro-Harmonix Big Muff Pi Guitar Effects Pedal is a legendary effects pedal known for its rich sustain and powerful distortion. With adjustable tone settings and a 9V battery included, it's designed for guitarists who want to enhance their sound effortlessly.