The TU-3—the world’s most popular stage tuner—combines BOSS’s reliable tuning technology with our iconic compact pedal form. Top performers around the world rely on this powerful stompbox for fast and flawless tuning every night, thanks to its highly visible 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 tool for every musician.

In 1998, BOSS introduced the TU-2, the world’s first pedal-based chromatic tuner. This groundbreaking product was an instant success, making stage tuning easier and more convenient than ever. The TU-3 followed in 2009, building on its popular predecessor with increased tuning accuracy, an improved LED meter, and expanded functions. TU pedals, which regularly appear on stages around the world, continue to be the favorite tuners for everyone from local musicians to famous touring professionals.

The TU-3 features a wealth of practical functions in its compact size. Activating the pedal engages the mute function, allowing you to tune silently and keep your audio system quiet during instrument changes and set breaks. The High Brightness mode reduces glare for improved meter visibility on sunny outdoor stages. And when you power the TU-3 with an optional PSA series adapter, you can use a PCS-20A parallel cable to distribute power to other pedals on your board.