Used BOSS GP 20 Effect Pedal

Used BOSS GP-20 Amp Factory dual COSM amp simulator in great condition, offering warm tube tones and modern high-gain sounds. Features 22 amp models, dual preamp signal paths for simultaneous processing, easy-to-use interface, and stereo or mono output. Ideal for live or studio use, it delivers authentic amp tones in a rugged, road-ready design. Powered by AC adapter or 9V battery, it's a versatile and reliable addition to any guitarist's pedalboard.