The GP-10 Guitar Processor from BOSS is a fast-reacting and accurate guitar processor for use with the included GK-3 pickup attached to any type of electric guitar. The processor utilizes COSM technology to model acoustic and electric guitars, bass, synthesizers, and polyphonic effects. The technology also allows you to change the tuning of your guitar without touching your tuners and features alternate tunings for Open D, E, G, A, as well as Drop D to A, D-Modal, Nashville, and -12 to +12 pitch shifting. Additionally, the GP-10 offers a multitude of effects including preamp simulations, overdrive/distortion, wah, chorus, delay, reverb, EQ, and noise suppression.

The included GK-3 Divided Pickup attaches to any steel-stringed electric guitar (no drilling necessary) and delivers accurate performance data to the GP-10, sending individual signals from each guitar string to the device. The pickup's slim-line design enables ideal placement on the guitar, while a big and smooth GK knob and Select Switch allow for selecting patches and effects, as well as amp and instrument models.