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BOSS TU3S Chromatic Tuner Pedal



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Product Description

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


Customer Reviews


14 reviews





Mr. MIKE KNIGHT5th Aug 2023

Neat tuner that takes up little space on the pedal board. Seems to be very accurate.

Value 4Looks 4Durability 4Sound 4

Daunton Todd8th Oct 2021

Does what it says on the box. Compact enough and accurate.

Value 4Looks 4Durability 5

Trusted Customer23rd Aug 2021

Get the Boss TU-3s tuner. Its perfect for your pedal board, easy to use, easy to see and if its Mick's (That Pedal Show) tuner of choice then its got to good right? Well it is!

Value 5Looks 5Durability 5Sound 5

Mrs Marie Dodds3rd Mar 2021

The tuner is excellent. BE AWARE DOES NOT TAKE BATTERIES. I made this mistake due to the advert advising its power was battery/9v adaptor. Works as intended and with it being permanently on when using pedals, able to see when my G string on the Les Paul is starting to loosen again while playing.

Value 5Looks 5Durability 5

Mr Marc Walters7th Feb 2021

Value 5Looks 5Sound 5

Trusted Customer17th Jan 2021

Mr Stephen Archer28th Dec 2020

Perfect tuner for running off an ES5, should’ve switched to this sooner.

Value 5Looks 5Durability 5

Ridzuan Aziz26th Sep 2020

Boss durability and performance at half the size.

Value 5Looks 5Durability 5

Mr. Scott Clarke9th Aug 2020

Value 4Looks 4Durability 4Sound 4

Mr Malcolm Hobson Malcolm Hobson17th May 2020

Very accurate and great size

Value 5Looks 5Durability 5Sound 5

Finance available at checkout for orders £300+

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At the end of the checkout you'll be taken to the V12 Finance web site. This is where your finance application is processed. Assuming your application is accepted you'll be able to place your deposit and confirm your order right there.

Then, your order will come through to Andertons and we'll send you the goods. Get approval before 3pm and we'll send your order out the same working day (stock permitting) for next working day delivery!

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Read More About Online Finance

Andertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.