It is fully functional, although there are minor scratches from use. The original power adapter is included. The product will be packaged with multiple layers of cushioning material on each side. Additional cardboard boxes are available for the following fees, please contact us before purchasing: Roll cardboard: 3000 yen Box cardboard: 4000 yen A guitar processor boasting overwhelming expressiveness, combining guitar/synth modeling, alternate tuning functions, and multi-effects. When combined with a guitar equipped with a GK pickup, you can freely set COSM guitar modeling and tuning, and switch instantly. It also features thick analog modeling synth sounds. Multi-effects can be used even with input from a regular guitar cable. This is an advanced guitar processor that expands the expressive power of the guitar infinitely. By connecting the signal from a divided pickup such as the GK-3 to the GP-10, you can enjoy a variety of sounds, including guitar modeling. Guitar modeling includes single-coil, humbucker, as well as acoustic guitars, sitars, banjos, and fretless guitars/basses. Furthermore, it also includes the Roland GR-300, a famous guitar synthesizer from yesteryear, and an analog modeling synth that provides thick sounds using two oscillators. In addition, POLY FX, which provides unprecedented innovative sounds by independently processing the signal of each string, is also available to stimulate the guitarist's imagination. Instantly switch between a variety of tunings Of course, tuning settings and effects can also be freely set. This dramatically expands the possibilities of guitar expression. With the alternate tuning function, you can instantly switch a guitar with normal tuning to various tunings and play. You can enjoy slide playing with open tuning, heavy riffs with drop tuning, solo playing by returning to normal tuning, and a beautiful-sounding 12-string guitar, as if you were changing guitars. Tuning can also be user-customized. Equipped with effects of the flagship GT-100 class. You can freely set the connection order of 16 types of effects, and enjoy unique sounds such as Harmonist and Pedal Bend, making it a full-fledged specification.