#3
what would the difference between this and a EHX double muff be?
If its not fender than whatever]
#5
It might be good, actually. It's a JFET design, so you might be able to use the pedal to distort rather than the amp. It depends on the amp, I suppose, but you might have some luck with it. It's very different from the double muff, which is a modern fuzz.