BOSS TU-3 Chromatic Tuner Pedal is the world’s best selling stage tuner and a staple on professional pedalboards worldwide. Known for its accuracy, reliability, and rugged build, the TU-3 combines trusted BOSS tuning technology with the iconic compact pedal design musicians depend on for live and studio use.
Designed for fast and precise tuning, the TU-3 features a bright, high visibility LED meter that remains easy to read on dark stages or in direct sunlight. Simple operation and road tested durability make it a dependable choice for guitarists and bassists who need flawless tuning night after night.
More than just a tuner, the BOSS TU-3 functions as a complete pedalboard utility tool. It includes a silent mute mode for tuning between songs, a built in buffer that preserves tone across long cable runs, and power distribution to supply additional pedals. Whether for touring, recording, or rehearsal, the TU-3 Chromatic Tuner is an essential pedal for any serious musician.
Features
- Sharp 21-segment LED meter with brightness control
- High Brightness mode enhances meter visibility when playing outdoors
- Accurate to +/- one cent
- Accu-Pitch Sign function provides visual verification when tuning is complete
- Chromatic mode for tuning to any pitch
- Guitar and Bass modes for tuning by string number, with support for 7-string guitars and 5- and 6-string basses
- Flat tuning options support down tuning up to six semitones below standard pitch (Guitar mode) and three semitones below (Bass mode)
- The output automatically mutes when the tuner is engaged, allowing for silent tuning on stage
- DC output jack for distributing power to other pedals (requires optional PSA-series adaptor and PCS-20A parallel cable)
- BOSS five-year warranty





