BOSS TU-3 Chromatic Tuner

The World-Standard Tuner The BOSS TU-3, an advancement of the best-selling TU-2 stage tuner, comes in a rugged BOSS stompbox design. It offers a clear 21-segment LED display with a High-Brightness mode for excellent visibility even in bright outdoor conditions. Users can select Chromatic or Guitar/Bass tuning modes and benefit from the Accu-Pitch Sign for precise tuning confirmation. The tuner also includes a Note Name Indicator compatible with 7-string guitars and 6-string basses, plus a Flat-Tuning mode supporting up to six half-steps. This reliable tuner sets the standard for professional guitarists and bassists. 21-segment LED meter with brightness control High-Brightness mode enhances meter visibility outdoors Accurate to +/- one cent Accu-Pitch Sign function provides visual verification when tuning is complete Chromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses) Flat tuning is supported with Guitar Flat mode, which allows for “drop” tunings up to six semitones below standard pitch Tuner automatically mutes when the tuner is on Supplies power for up to seven BOSS compact effect pedals BOSS five-year warranty