Valeton GP-200 multi-effects processor with IR + amp/cab simulation + effects + looper + audio interface, 9V PSUmulti effects processor with IR + amp cab simulation + effects + looper + audio interface, 9V PSU,The Valeton GP 200 Multi Effects Processor is an impressive all rounder. It is an amp, effects unit and even a recording interface. It is an upscaled version of the GP 100 with more amps, better connectivity, and enhanced control options. The GP 200 has an expression pedal that can be used to control up to 3 effect parameters. The GP 200 has 8