The Marshall PEDL-00014 is a 3-button footswitch designed for use with select Marshall Valvestate amplifiers. It allows for hands-free control of Clean/Overdrive, OD1/OD2, and Chorus functions, enhancing live performance flexibility. This footswitch is compatible with Valvestate models that utilize a DIN-5 connector. For specific compatibility details, it's recommended to consult your amplifier's manual or contact Marshall Amplification directly.