BOSS TU-03 Chromatic Clip On Tuner
BOSS TU-03 Chromatic Clip On Tuner
BOSS TU-03 Chromatic Clip On Tuner
BOSS TU-03 Chromatic Clip On Tuner

BOSS TU-03 Chromatic Clip On Tuner

Portable headstock tuner/metronome for guitar, bass, ukulele and violin


  • High-performance tuner and metronome in one convenient clip-on unit
  • Clips onto the headstock of a guitar, bass, ukulele, or other stringed instrument
  • Five selectable tuning modes: chromatic, guitar, bass, ukulele, and violin
  • Audible reference pitch function and support for flat and double-flat tunings
  • Advanced metronome with eight patterns and ten beat variations
  • Metronome beats are displayed on screen and sounded through a built-in speaker
  • Large backlit display and durable padded clip

  • In stock, ready to ship
Regular price£21.00
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  • £3.99
  • 3-7 working days
  • Free delivery over £100.00

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Compact and simple to operate, the TU-03 puts two essential music tools within easy reach. It combines a chromatic tuner and metronome in one device that clips onto the headstock of nearly any stringed instrument, providing instant-access convenience everywhere you play. Packed with deep features not typically found in clip-on units, the TU-03 offers fast and accurate tuning performance with five different modes, plus advanced metronome functionality with a built-in speaker and numerous pattern/beat variations.

Rock-Solid Tuning Performance

With its large display and easy-to-set controls, the TU-03 makes instrument tuning quick and efficient. Standard chromatic mode allows you to tune to any pitch, while dedicated guitar, bass, ukulele, and violin modes provide string-based displays for even faster operation. Flat and double-flat tunings are supported as well, and the overall reference pitch is adjustable from 430-450 Hz. The reference pitch can also be sounded through a built-in speaker, providing an audible tuning tone for your playing partners.

An Onboard Metronome to Improve Your Time and Groove

Good rhythm is a vital skill for every musician. And since the TU-03 mounts right on your instrument, it’s never been more convenient to stay on top of your timing practice. You can hear the metronome beat with the integrated speaker, and also follow along visually with the dynamic display. It’s even possible to turn down the metronome sound and use the display as a silent timing reference while rehearsing and performing with other musicians. Eight different patterns and ten beat variations support practicing numerous styles and time signatures, and the tempo is easily adjustable from 30-250 BPM.

Always at the Ready

The TU-03 is rugged, reliable, and built to last, with a spring-loaded clip and flexible pad that provides secure, stable attachment on all types of headstocks. And thanks to its integrated backlight and non-glare surface, the display is easy to view in any environment, from dark stages to bright sunlight.

Tuning Range: A0 (27.5 Hz)--C8 (4,186.0 Hz)
Reference Pitch: A4 = 430 Hz--450 Hz
Tuning Accuracy: +/-1 cent
Flat Tuning: Regular--2 semitone lower

Tempo: 30--250
Rhythm: 8 TypesBeat: 0--9

Power Supply
CR2032 lithium battery x 1
Current Draw 30 mA (Metronome mode) 15 mA (Tuner mode)
Expected battery life under continuous use: 8 hours* These figures will vary depending on the actual conditions of use.
Auto off function:
Approx. 5 minutes

Owner's manual
CR2032 lithium battery

Width 66 mm 2-5/8 inches
Depth 42 mm 1-11/16 inches
Height 35 mm 1-7/16 inches
Weight (including battery)40 g2 oz

* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.

"This tuner is super-portable and so easy to use - just clip it onto your headstock and the light-up display will have you pitch-perfect in seconds."

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