The BOSS TU-3 Chromatic Tuner Pedal is a reliable, industry-standard tuning solution perfect for stage and studio use. This used unit is in Excellent condition with minimal signs of wear, functioning flawlessly. It features a rugged stompbox design, 21-segment LED meter with brightness control, and supports flat tuning up to six semitones down. Accurate to +/-1 cent, the TU-3 offers Chromatic and Guitar/Bass tuning modes, including support for 7-string guitars and 6-string basses. Its Buffered Bypass design ensures tone integrity when the pedal is off, and the built-in DC Out can power other pedals using a daisy chain. Powered by a 9V battery or standard Boss-style power supply (not included), this pedal is a must-have for any serious guitarist or bassist.