Marshall PEDL-91016 6-way Footswitch/Footcontroller For JVM4, DSL40CR, DSL100HR. Included is the 1/4" TS cable to connect it to the amp.
When used with the DSL40CR The 6 buttons control the following modes.
PEDL-91016 modes include: 1 - Clean (classic green) 2 - Crunch (classic red) 3 - OD1 (ultra green) 4 - OD2 (ultra red) 5 - Master 1/Master 2 (toggle) 6 - FX Loop on/off