Used BOSS GP20 AMP FACTORY Effect Pedal

Experience professional-grade tone shaping with the used BOSS GP20 Amp Factory multi-effect pedal, in great condition. Featuring 22 COSM amp models, dual preamp circuitry, and intuitive controls, this durable unit delivers versatile sounds from clean to high-gain. With stereo outputs and onboard speaker simulation, it's perfect for both stage and studio use. Whether you're chasing classic rock tones or modern metal, the GP20 offers rich, authentic amp emulation in a compact, road-ready design.