Flagship-class BOSS sound engine squeezed into a light and compact floor unit Ultra-portable and easy to use, the GT-1 delivers pro-level tones everywhere you play Driven by the powerful BOSS GT-series engine, it gives you access to a huge selection of world-class amps and effects for all types of music A streamlined interface enables quick and intuitive sound creation, while an assignable control switch and expression pedal provide dynamic real-time effects adjustment Modern design with no hard edges enables safe transport in a guitar bag Easy Select and Easy Edit functions for quickly choosing and tweaking patches Four AA batteries provide up to seven hours of playing time for busking and mobile gigs Onboard control switch and expression pedal; footswitch/expression pedal jack and USB Download ready-to-play pro patches for free at BOSS Tone Central AC adaptor not included, optional BOSS PSA adaptor recommended