The Boss GP-10GK multi-effects guitar pedal creates totally new sounds by blending modeled and normal guitar tones together. It features 13-pin input that accustom the Roland GK-3 or GK compatible pickups for your favorite tuning. Featuring COSM amps and effects, this pedal lets you play various range of acoustic, bass and electric guitars. The expression pedal onboard lets you control pitch bends, volume swells, and wah effects. You can connect the GP-10 guitar processor to your computer and get access to the BOSS Tone Studio editor/librarian application for innumerable user presets online. It's USB connectivity provides guitars to MIDI conversion and audio recording.