I'd like to at least be able to toggle the four mute groups from a pedal - anybody done that yet? One mute group could be the vocal reverb/FX, maybe another for the acoustic guitar, maybe a third for emergency all-mute, etc?
I do have a $3.25 Arduino board that I could build a pedal around for myself. Dunno if I'd want to make them for others - it would probably be $100 to be worth my while
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I also have an old Behringer BCN44 controller I could put on a mic stand or on top of my amp?