The Electro-Harmonix Big Muff Pi is a guitar effects pedal with three controls: Volume, Tone, and Sustain. It has some signs of use and minor scratches, but it works without any problems. Sound has been confirmed. One Canare patch cable is also included. - Brand: electro-harmonix - Model Name: Big Muff Pi - Control Knobs: Volume, Tone, Sustain - Accessories: Warranty card Thank you for looking. Type: Electric Guitar