BOSS TU-3 Chromatic Tuner pedal



The New WorldStandard Tuner Has Arrived
The world`s topselling stage tuner, the BOSS TU2, evolves and improves with the debut of the new TU3.


In stock



The New World-Standard Tuner Has Arrived

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!

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)


Owner`s Manual, Leaflet (`USING THE UNIT SAFELY,` `IMPORTANT NOTES,` and `Information`), Dry battery/9 V type (6F22)


AC adaptor: PSA series, Parallel DC cord: PCS-20A

Additional information