The Boss TU-3 is a professional-grade chromatic tuner pedal built for stage and studio use. With a 21-segment LED meter, high-brightness mode for outdoor visibility, and support for guitar, bass, flat tunings, and 7-string guitars, it covers nearly any tuning need. Its mute function enables silent tuning, while buffered bypass ensures your signal stays strong. Built into the classic Boss compact chassis, the TU-3 is a no-nonsense staple on countless pedalboards worldwide.