My guitar - when used with my new wireless thingey - is scratchy, as if I hooked my guitar up directly to the sound system without a DI box. I am then assuming there is a ground potential mismatch. Since the wireless unit wasn't specifically designed for guitar, is there some kind of thing I can add to the input? I was thinking a capactor, but that would also cut out my input power completely, which would be useless and pointless.
