I replaced the bottom of this pedal with a bottom plate to mount it on a board, but I ended up not using it and kept it in storage. The original bottom plate is also included. BOSS NS-2 Noise Suppressor, which effectively suppresses noise. - Model: NS-2 - Brand: BOSS - Function: Noise Suppressor - Connectors: INPUT, OUTPUT, SEND, RETURN - Control Knobs: REDUCTION, THRESHOLD, MODE Thank you for looking.