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Boss TU-3 Chromatic Pedal Tuner

Boss TU-3 Chromatic Pedal Tuner

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Boss Tu3 Chromatic Pedal Tuner. The Boss TU-3 has arrived, carrying on and improving on everything that made the best-selling TU-2 great.
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Product Details

Boss TU-3 Chromatic Pedal Tuner

The Boss TU-3 has arrived, carrying on and improving on everything that made the best-selling TU-2 great. 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. On the TU-3, choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The Boss 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. The Boss TU-3 is the new-standard tuner that no guitarist or bass player should be without.


  • 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
  • Signal is automatically muted 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
    • Power Supply: DC 9 V: Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline), AC Adaptor (PSA series: optional)
    • Current Draw: 30 mA (DC 9 V), 85 mA (DC 9 V, when High Brightness mode is on)
    • Accessories Included: Owner's Manual, Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information"), Dry battery/9 V type (6F22)
    • Options NOT included: Boss PSA-120S Power Supply for this pedal
Name Boss TU-3 Chromatic Pedal Tuner
Brand Boss
Condition New
UPC 761294409664
Shipping Option Free Shipping to the Continental U.S.

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