I had planned on adding a voice to my stalkabout for this year but didn't accomplish it. Does anyone have any ideas that could help me? I have already bought a Fender can amp that will mount to the backpack frame. My original plan was to run a pitch shifter guitar pedal between the mic and the can amp. The problem with that was the cost of the pitch shifter pedal. I've done countless Ebay searches for pitch shifting pedals and only come up with a fewhighly sought after brands. I bought one of the cheap voice changers you often see around halloween, but its sound quality is really poor. The local pawn shop has cheap guitar pedals from time to time but I don't know enough about them to know how they will effect the sound.