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Boss TU3 Chromatic Tuner Pedal

Boss TU3 Chromatic Tuner Pedal

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Boss TU3 Chromatic Tuner Pedal

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Quick Overview

A fully featured floor tuner from Boss at an amazing price!



In the form of a rugged metal chassis that will stand up to repeated stomps night after night, the TU-3 allows you to get perfectly in tune thanks to a 21-segment LED meter that can recognise ‘regular’ guitars and basses and even 7-string guitars and 6-string basses.

The high-brightness display is very clearly visible from a distance, so even with the glare of stage lighting you’ll still be able to ensure that you’ve kept your tuning, and for those who like to transpose their axe a little lower than E, there’s also a flat tuning option that can support as many as six half-steps down.

When you click on the BOSS TU-3, your signal is also automatically muted for convenience, and via way of an optional PCS-20A cable, you’re able to power up to seven BOSS compact effect pedals too, making an invaluable, versatile and world-beating tuner pedal that has become a professional go-to.


  • 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 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
  • Dimensions (WxDxH): 73 mm (2-7/8 inches) x 129 mm (5-1/8 inches) x 59 mm (2-3/8 inches)
  • Weight: 390 g (0 lbs. 14 oz.)