hellloo, excuse me if this is a very stupid amateur question but…
i built the voice changer kit and i swapped out the speaker with an audio out jack and the mic with an audio in. and it all works well and good when i use my iphone or a dynamic mic as the input signal and headphones/speakers as an out but once i plug it into my FX chain, (in this case a mixer FX send/return) i get a nasty buzz (the effects still work but no signal is intelligible besides the horrible buzz. im assuming this is a grounding problem when its looped into a chain. is there a special way to do that input/output modification that Im not aware of? thanks for the help!