Boss TU-01 | Battery Operated Note Indicator Clip On Chromatic Guitar Bass Ukulele Tuner

SKU: BOSS-EFX-TU01 Category:
Brand: BOSS


Digital Meter Instrument Tuner

Ideal for guitar, bass, and ukulele, the clip-on TU-01 is the most affordable tuner in the trusted BOSS lineup. Small, durable, and simple to use, it provides convenient, reliable tuning right on your instrument’s headstock. A bright, attractive display features a cool digital meter and note indicator, plus two lights that show when you’re perfectly in tune. The TU-01 also adjusts for different viewing angles and folds down for easy transport in your case or gig bag.

Key Features

  • Renowned BOSS tuning quality in an affordable clip-on tuner
  • Features Chromatic, Guitar, Bass, and Ukulele tuning modes
  • Convenient reference pitch function (A=440 Hz)
  • Runs for up to 25 continuous hours with a CR2032 lithium battery
  • Auto off function to preserve battery life when the tuner is not in use

Technical Specifications

Tuning Range
A0 (27.5 Hz)–C8 (4,186.0 Hz)
Reference Pitch
A4 (440 Hz only)
Tuning Accuracy
+/- 1 cent
Tuning Mode
Power switch / Mode switch
Backlit LCD
Power Supply
CR2032 lithium battery x 1
Current Draw
6 mA
Expected Battery Life Under Continuous Use
Approx. 25 hours
* These figures will vary depending on the actual conditions of use.
Auto off Function
Approx. 7 minutes
Owner’s manual
CR2032 lithium battery
Size and Weight
Width: 56 mm, 2-1/4 inches
Depth: 31 mm, 1-1/4 inches
Height: 32 mm, 1-5/6 inches
Weight (including battery): 30 g, 2 oz

SKU: BOSS-EFX-TU01 Category:

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