Boss TU-3 Chromatic Tuner (TU3)

Boss TU-3 Chromatic Tuner (TU3)

Brand: BOSS


The Boss TU-3 is a classic guitar pedal tuner, loved for its effectiveness live and in studio to get you perfectly in tune just by looking.

In stock ( Myaree: 5 / Wangara: 3 / Warehouse: -1 )


The Boss TU-3 is a top seller worldwide. For many guitarists and bass players, it is the best guitar tuner ever made.

Why? Firstly, it's a tough little pedal, housed in a metal body. It's compact, a standard guitar pedal size, so it's suitable on your pedal board.

One of the best recognised aspects of the TU-3 is the lights you view to get in tune. They are bright and easy to follow. Even outside, where other tuners get hard to see, these have a High-Brightness mode that cuts through outdoor glare.

And when you hit the right pitch, this tuner lets you know!

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
  • 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 Owner’s Manual, Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and “Information”), Dry battery/9 V type (6F22)
Options AC adaptor: PSA series, Parallel DC cord: PCS-20A
Size and Weight
73 mm 2-7/8 inches
129 mm 5-1/8 inches
59 mm 2-3/8 inches
390 g 0 lbs. 14 oz.

Additional information

Weight 0.5 kg
Dimensions 7 × 6 × 13 cm