Tascam MP-GT1 MP3 Portable Memory Guitar Trainer With Manual and Box and Usb cable to connect to computer. No ac adapter but powers on and charges through the USB port to computer. New in open Box. Product Description: The Tascam MPGT1 is designed with musicians in mind. It combines a guitar trainer based on the award winning Tascam CD-GT1mkII. With enough memory to store up to 240 tunes, this is even more portable than the original. Play back MP3s using Variable Speed Audition, which slows down the speed without changing the pitch, and sections can be seamlessly looped while practicing tricky passages. The guitar input lets you play with the built in Multi-effects. Also includes a guitar canceller to play along with your favorite bands. A tuner, metronome, and rechargeable battery are also built-in. All these features in a package small enough to fit in your pocket. A 9-hour lithium-ion battery or an optional power supply will power the unit.