BOSS TU-3 Guitar Tuner

The BOSS TU-3 is the trusted evolution of the world’s top-selling stage tuner, delivering unmatched accuracy and durability in a classic stompbox format. Whether you’re on a dark stage or playing in bright sunlight, its 21-segment LED meter with High-Brightness mode ensures crystal-clear visibility. The TU-3’s Chromatic and Guitar/Bass modes make it versatile for all kinds of players, supporting everything from standard tuning to extended-range guitars and basses.

With pinpoint accuracy to within ±1 cent and the handy Accu-Pitch Sign for instant visual confirmation, tuning is quick and precise. Add in features like flat tuning up to six semitones down, automatic mute while tuning, and the ability to power up to seven other BOSS pedals, and it's easy to see why the TU-3 is the tuner pedal of choice for pros worldwide.