Boss TU-3

Boss TU-3

The Boss TU-3 is a durable chromatic tuner stompbox that features a 21-segment LED meter with a high-brightness mode, Accu-Pitch Sign for visual confirmation, and multiple tuning modes including chromatic and guitar/bass with support for extended-range instruments and drop tunings. It also includes a mute function, a buffered output, and can power other pedals.