Pedal Chromatic Tuner Boss TU 3 with Many Connections to Pedals

The Boss TU-3 tuner is very sturdy, has an indicator display consisting of 21 leds and exclusive HIGH BRIGHT mode, which crosses the illumination of any stage. You can choose between the chromatic or guitar / bass tuning modes and check the tuning with the ACCU-PITCH function.

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The BOSS TU-3 is the tuning pedal by which all other brands of pedals align yours. It also serves as a power supply for up to seven BOSS pedals.

The BOSS TU-3 is one of the fundamental pedals in the collection of any guitarist who takes his music seriously. The tuning pedal may not look as exciting as an effects pedal, but it can be the difference between a competent performance or a disastrous one. The TU-3 is the reference tuning pedal among professional musicians from all over the world who indicate it as one of their essential tools in their setup.

Based on the TU-2, the model that has been the standard in the last few decades, the TU-3 has the same functions that serve the needs of the most demanding musicians, ensuring that your instrument is perfectly tuned, maintaining the appearance of the pedal they are on. familiar with new functions and dynamic visualizations.

Highly accurate and versatile, the BOSS TU-3 can switch between chromatic tuning or Guitar or Bass tuning. With a display that features a 21-segment scale for a clear and easy-to-read display, under various stage conditions, the TU-3 also has ACCU PITCH indicators. a dynamic way to visualize the tuning, for greater accuracy.

The notes are visually marked by the name, with a scope that includes the tunings of seven-string guitars and six-string basses. If you play half step down or in drop tunings, the TU-3 has a Flat Tuning mode, which can go up to six half tones. In addition, you can adjust your tuning to the hundredth and calibrate it to the frequency of your preference: in addition to the 440hz reference, you can choose the one that best suits your needs, from 436hz to 445hz.

Designed pragmatically and with the most demanding stage conditions in mind, the BOSS TU-3 is, like all BOSS pedals, extremely resistant and durable, with a body that looks more like a battle tank. Using the OUTPUT output, the sound of your instrument is cut off when the pedal is activated, but if you prefer, you can keep the signal permanently alive using the BYPASS output, and you can even use the two outputs simultaneously and split the signal to two different destinations, be they two amplifiers or two pedal chains.

The BOSS TU-3 also serves as a power supply for other BOSS pedals (up to seven) using a cable for parallel chain connection, not included.

For more than 40 years, BOSS has been producing the most iconic pedal models that have shaped the sound of some of the most important artists of recent decades. All its products are recognized for their high quality and reliability.

Fine tune for the excellence of the BOSS TU-3.


  • 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
  • Tuner automatically mutes when the tuner is on
  • Supplies power for up to seven BOSS compact effect pedals

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