This is clearly a Seek Tuner
i am EXTREMELY uneducated when it comes to this stuff. so please feel free to make me feel real real dumb if i'm wrong. but wouldn't this rule out delay? in particular, delay with modulation? i feel like from what i've heard, delay and modulation draw lots of current. and a delay WITH mod BY ZVex, i feel, would draw substantially more than 100mA. of course i'm more than likely super wrong, and i don't quite understand why i am actually posting this right now, but hopefully, i'll at least learn something.
Schumann has nothing to fear from me. Although he may wish one of these new things I'm making, so his wallet may have something to fear. Or maybe we can barter. 8^)
I don't know for sure how much current a typical delay draws, but I'd guess a bit less than 100mA. Some can run on batteries. I know the Princeton chip is rated lower than 100mA. Delays and reverbs are notorious for low battery life, however, so you're right about them drawing a bunch of power.
i can't get this thing out of my head!!
The box with the foot switches might be an on/off switch, a "step through" switch to choose your effect (like the ringtone switch) and the knobs and leds could be indicators and separate volumes for each.