Boss TU-3 Chromatic Tuner Pedal with BypassThe BOSS TU 3 Chromatic Tuner Pedal unites trusted BOSS tuning technology with iconic compact pedal format. Top performers everywhere rely on this robust stomp for fast and flawless tuning night after night, thanks to its high visibility meter, simple operation, and road tested durability. The versatile TU 3 also includes a mute function, tone saving buffer, and power distribution capabilities, making it an essential utility tool for every player.