Used BOSS GP20 Effect Processor

The BOSS GP20 Amp Factory is a versatile guitar effect processor featuring 22 COSM amp models, dual overdrive/distortion effects, and digital output for professional-grade tone shaping. This used unit is in good condition with some signs of wear from normal use, but functions perfectly. With intuitive controls, stereo outputs, and built-in speaker simulation, the GP20 delivers classic and modern amp tones ideal for stage or studio setups. Powered by 9V adapter (not included).