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Boss TU-3

Chromatic Floor tuner

  • Cent mode (display as a classic tuner) or Stream mode (running light display)
  • 21 Segment LED meter
  • Tuning range: C0 (16.35 Hz) up to C8 (4.186 Hz)
  • Accu-Pitch
  • High-Brightness mode
  • Chromatic tuning in accordance to note names or string numbers 1 to 6
  • Flat Tuning up to 6 semitones below
  • Mute or Bypass
  • Also suitable for 7-string guitars and 6-string basses
  • Accuracy +/- 1 Cent
  • Adjustable reference tone from 436 up to 445 Hz
  • Powered with 9 V batteries or 9V DC power supply (coaxial connector - negative pole inside, not included, needs to be ordered separately under Article Nr 409939)
  • Dimensions (WxHxD): 73 x 59 x 129 mm
  • Weight: 390 g

Further Information

Chromatic Yes
Display LED
Integrated Microphone No
Integrated Metronome No
PSU Connector Yes
Design Floor Tuner

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Our most popular Guitar/Bass Tuners
2179 Customer Ratings
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Great tuner
luffarvante, 08.07.2021
I bought this pedal to allow for accurate tuning in any environment.
I considered some cheaper alternatives but got the opportunity to test this one next to a nux tuner and the difference was big enough to convince me that this tuner is worth it.

If you just need to tune a guitar tuned in E standard "good enough" for a rehearsal or practice at home, you can probably get away with a cheaper alternative - although this pedal certainly makes that easier and quicker as well.
When working with down tuned instruments this pedal is definitely more accurate though; I've successfully both tuned and setup the intonation of several guitars and bass guitars tuned as low as B-standard with this pedal.
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Super Simple
LucianoCanto, 07.07.2021
Very very simple to use with the manual that is included you can learn how to use it and in minutes. Even if you don't look at the manual, still really simplistic, just plug in and tune. Came with batteries included in mine, not sure if it will be the same for all.
When tuning in D standard for bass and guitar, there is no problem, it picks up all the notes perfectly.
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100% satisfied
SirDimitriosOfAthens, 10.05.2020
Best item in my boss pedal-baord. In live performances, I only take a rapid look to tune the guitar. If you purchase this item, don't forget to switch off other pedals connected an plce it first of the line (in my opinion)
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Industry standard... no need for anything else
Slamdog, 08.03.2015
The TU-3 is the latest update from Boss on the standard pedal tuner. . It can be the only pedal you have or one on your full effects board. Either way, it works well. Clear display in daylight or on a dark stage and with more steps than the tu-2 even more accurate. Power from the 9v battery it lasts months or as part of your board setup on mains it doesnt load the psu too much so it can tag on the end of a chain of pedals.

used in standard mode its great on both guitars and basses. I have never needed to switch it to any of its other modes!

Construction is excellent. its built like a tank. my kids have dropped kicked stood on wedged under 4x12 cabs, dragged around and generally abused the first one... it still looks almost new and works perfectly. I bought a second one as it was a pain not having another to use when tuning guitars after maintenance and the kids had the only one with them. Thomann has the best price in europe, even with the shipping to the UK. five stars!!!
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$77
The shipping costs are calculated on the checkout page.
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
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* The prices shown exclude VAT and are valid as long as stocks last. Please click here for international shipping rates. Goods subject to custom declaration; customer fees to be paid on delivery if applicable. We do not accept liability for typographical errors or inaccurate information of any kind. All invoices will be issued in USD.
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