Order online or call: 520.325.3376  
Checkout Sign In  

Select a picture:

BOSS TU-3 Chromatic Stage Tuner

Item: BOTU3

Once you've used a Stage Tuner there's no going back. No more sitting down and balancing a tuner on your knee. No more having to turn around to see your tuner. Step on the pedal and mute your amp so you can tune withoiuut the whol;e world hearing it.

The Boss TU-3 is the descendant of the world-renowned, top-selling TU-2 stage tuner. Housed in a tank-tough BOSS stompbox body, the big improvement over its predecessor is the 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. As opposed to normal LED equipped tuners, the BOSS TU-3 is easily read in sunlight as well as dark environments.

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. The Boss TU-3 has two output jacks, one for muting the signal when the tuner is on (for silent tuning when performing) and another which bypasses this function.

The Boss TU-3 is easy to read, easy to use, fast and accurate and you will wonder how you ever lived without it.

BOSS TU-3 Chromatic Stage Tuner Features:

  • 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)
  • Width 73 mm 2-7/8 inches Depth 129 mm 5-1/8 inches Height 59 mm 2-3/8 inches Weight 390 g 0 lbs. 14 oz.

List price: $137.60

Price: $99.99

You Save: $37.61 (27%)

Available for immediate shipping.
Includes FREE Ground Delivery
Ask a Question About...

BOTU3 - TU-3 Chromatic Stage Tuner
Price $99.99

Your Name*

Email Address*  

Daytime Phone*



What is 4 plus 2 *


Facebook Share Twitter Share Pin it Google +