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Boss TU3 Chromatic Tuner

Ex Tax: €70.25
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Boss TU3 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!




  • 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

  • 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)

  • Dimensions:

    • Width: 73 mm (2-7/8 inches)

    • Depth: 129 mm (5-1/8 inches)

    • Height: 59 mm (2-3/8 inches)

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