I have for sale a Digitech voice lab 300. It has 40 set voices and 40 more tweakable voices. It goes through the mic to the pedal to the pa system. It contains 80 different voices from Alvin the chipmunk, to Darth Vader to space aliens to Monster Truck voice. Boy voices, girl voices. Add special effect sounds. It also contains multiple adjustable echoes, reverbs and more. There's no end to the voices you can come up with. Just talk in your normal voice and the voice coming out of the pa will sound like any of the above mentioned voices.
Comes with power supply. Use your own mic. $100. Pics available on request.