I have a clinch ep pedal that has a kbob for variable boost. Somehow I need this too, but in a dual pedal. Maybe with a blues breaker? Get my Mayer on!
I run a modeler into a power station and into a guitar 2x12 open back cab sometimes. Sounds pretty good. Anything cleanish should do. Just experiment and don’t spend $ up front. You probably have something already that will do the job
It’s probably the led. They’re simple to replace. My FX loop bulb went out and I replaced it myself. For some reason the bulb is part of the circuit so when they go out you lose the function.