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Boss TU-3S Chromatic Guitar and Bass Tuner

World-Standard Performance in a Tiny Footprint


(2 reviews)


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MSRP: Old Price $149.99 Discounted Price $99.99 Save : $50.00 (33%)
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MSRP: Old Price $149.99 Discounted Price $99.99 Save : $50.00 (33%)
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The BOSS TU-3 is the world’s go-to stompbox tuner, trusted by players everywhere for its reliable operation and bulletproof durability. Scaled down in size, the TU-3S gives you the same industry-standard performance in a tiny footprint that saves precious pedalboard space. The display and tuning functions are identical to the TU-3—the only thing eliminated is the pedal switch. Always on and ready to go, the TU-3S is perfect for use with pedal switching systems like the BOSS ES-8 and ES-5, and ideal for any setup where space is at a premium

  • Respected TU-3 tuning performance in a more compact size
  • 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 modes, with support for 7-string guitars and 6-string basses
  • Guitar Flat mode supports “drop” tunings up to six semitones below standard pitch
  • Powered by optional PSA-series adapter; DC Out jack for powering up to seven BOSS compact effect pedals via an optional PCS-20A daisy-chain cable
  • BOSS five-year warranty

Get yours today; with the security of our many decades of experience and Sam Ash Direct efficient order processing, your satisfaction is guaranteed!

Awesome !!


Awesome tuner. Perfectly compact. I have limited space on my pedal board and was trying to figure out how to fit the TU-3 while still being able to step on pedal. The TU-3s solved this problem while eliminating the need to turn it on with my foot. Is on as soon as I plug my pedal board in. Perfectly accurate. Couldn't be happier. Would definitely recommend this product.

Chuck V

Los Angles


Fits perfectly on my board


Tunes my guitars flawlessly. It's compact size fits perfectly on my pedalboard where space is a premium. I didn't consider the lack of bypass on this when I purchased, however, since space on my board is at a premium and I don't gig anymore it doesn't matter to me. I would definitely buy it again nd recommend to anyone.


Chicago, IL.


TU-3S Chromatic Guitar and Bass Tuner

5.0 2


Warranty Info:

Effects pedals: 5 years parts, 3 years labor All other products: 1 year parts, 90 days labor

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