- The Boss TU-3 Chromatic Tuner is a popular choice for professional, gigging musicians. Equipped with a 21-segment LED meter, the TU-3 offers perfect visbility even in poor lighting. Compatbile with guitar or bass, the Boss TU-3 can also supply power to other pedals on your board, and its roadworthy design makes it the perfect choice to last a lifetime of gigging.


- Housed in a really tough BOSS stompbox body and featuring a smooth 21-segment LED meter with a High-Brightness mode, the Boss TU-3 cuts through the brightest lighting conditions. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy improved visual pinpoint tuning verification with the Accu-Pitch Sign function. The Boss TU3 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.


Features & Specifications:

  • 21-segment LED meter with brightness control
  • High-Brightness mode enhances meter visibility outdoors
  • 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 7 BOSS compact effect pedals
  • Tuning Range: C0 (16.35Hz)-C8 (4186Hz)
  • Reference Pitch: A4=436-445 Hz (1Hz step)
  • Tuning Accuracy: 1 cent
  • Width: 73 mm2-7/8 inches
  • Depth: 129 mm5-1/8 inches
  • Height: 59 mm2-3/8 inches

Boss TU-3 Chromatic Pedal Tuner


    39b Westbourne Road, Marsh,


    HD1 4LQ


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    01484 321388

    © 2020 by Keith Dawson Music