As above, a passive volume pedal afterward should be good for bringing the level down without affecting tone. If you're into hacking things apart you can lift pin 3 of the volume pot and solder a 250k resistor between the pad and the pin, that should effectively cut the output level in half. That's probably what I'll play with doing. The other option is a resistor divider on the output after the volume pot (effectively what the volume pedal is doing). Either one works, they should both be about the same.
Would another pot fit inside somewhere? Maybe on the side with a mini knob a la Edison? If not, maybe the resistor for the volume pad can be tied to a switch?
To be frank, I don’t really know how much these suggestions would help, if any at all. I have no idea how much space there is to work with on the board
