The BOSS TU-3 is renowned as the world’s best-selling stage tuner, combining advanced BOSS tuning technology with a compact pedal design. Musicians around the globe depend on this pedal for its rapid and accurate tuning performance. With a bright, 21-segment LED meter, it ensures high visibility for tuning in various settings, including outdoor performances. Features like the Accu-Pitch Sign function provide visual confirmation upon successful tuning, and it supports chromatic tuning as well as dedicated modes for guitar and bass tuning. The TU-3 also includes a mute function for silent tuning and has the capability to power other pedals via its DC output jack, making it an indispensable tool for any musician performing live.