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Boss TU-3 Chromatic Tuner

The world’s top-selling stage tuner, the BOSS TU-2, evolves and improves with the debut of the new TU-3. Housed in a tank-tough BOSS stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars and 6-string basses, while the Flat-Tuning mode can support up to six half-steps. It’s the new-standard tuner that no guitarist or bass player should be without!

  • 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