BOSS TU-03 Clip-On Tuner and Metronome for Guitar, Bass, Ukulele & Violin

The BOSS TU-03 Clip-On Tuner & Metronome combines two essential music practice tools into one compact and convenient device designed for guitarists, bass players, ukulele players, violinists, and other string instrument musicians. Featuring a high-performance chromatic tuner and an integrated metronome in a single headstock-mounted unit, the TU-03 provides fast and accurate tuning, reliable tempo control, and easy operation wherever you play. Its compact design, large backlit display, and secure padded clip make it an ideal accessory for practice sessions, lessons, rehearsals, live performances, and everyday musicianship.

Two Essential Music Tools in One Compact Clip-On Unit

The BOSS TU-03 combines a precise instrument tuner and a versatile metronome in one practical accessory, eliminating the need to carry separate tuning and timing devices. Designed to attach directly to the headstock of guitars, basses, ukuleles, violins, and other compatible string instruments, it keeps essential performance tools within immediate reach while playing. This all-in-one design makes the TU-03 an excellent choice for musicians who need reliable tuning accuracy and rhythm practice support in a portable format.

Fast and Accurate Instrument Tuning

The TU-03 delivers dependable tuning performance with multiple dedicated tuning modes for different instruments. Players can select from chromatic, guitar, bass, violin, and ukulele C tuning modes, allowing quick instrument setup and accurate note recognition. The tuner supports a wide tuning range from A0 to C8 and provides tuning accuracy of ±1 cent, helping musicians achieve precise pitch adjustment before practice, recording sessions, rehearsals, or live performances.

For musicians who use alternate tunings, the BOSS TU-03 supports flat tuning adjustments up to two semitones lower and provides an adjustable reference pitch range from A4 = 430 Hz to 450 Hz. The built-in speaker can also provide an audible reference tone, giving players an additional method for accurate tuning without relying only on the visual display.

Built-In Metronome for Better Timing and Rhythm Practice

Developing strong timing and rhythm skills is essential for every musician, and the integrated metronome in the BOSS TU-03 makes practice sessions more effective and convenient. The metronome offers an adjustable tempo range from 30 to 250 BPM, along with eight rhythm patterns and ten beat variations to support different musical styles and practice requirements. Musicians can follow the beat through the built-in speaker or use the display as a visual timing reference.

Large Backlit Display for Clear Visibility

The TU-03 features a large, easy-to-read display with integrated backlighting, allowing musicians to clearly view tuning information and metronome settings in various environments. Whether practicing at home, performing on stage, or playing in low-light conditions, the clear display helps players quickly check tuning accuracy and tempo settings without interrupting their performance.

Secure Headstock Clip Design for String Instruments

Built for everyday musical use, the BOSS TU-03 includes a durable spring-loaded clip with a padded surface that securely attaches to different instrument headstocks. The compact design allows musicians to keep the tuner attached during practice while maintaining convenient access to all functions. Its lightweight construction makes it easy to carry in a guitar case, gig bag, or accessory pouch.

Ideal Tuner and Metronome for Practice, Lessons, and Performance

Whether you are a beginner learning proper technique, an experienced musician improving timing accuracy, or a performer preparing for a live show, the BOSS TU-03 Clip-On Tuner & Metronome provides essential tools for maintaining accurate pitch and rhythm. Its combination of precision tuning, flexible metronome features, compact portability, and simple operation makes it a valuable accessory for guitarists and string instrument players of all skill levels.

Key Features of BOSS TU-03 Clip-On Tuner & Metronome

• Two-in-one design combining a chromatic tuner and metronome
• Compatible with guitar, bass, ukulele, violin, and other string instruments
• Five tuning modes: Chromatic, Guitar, Bass, Violin, and Ukulele C
• High tuning accuracy: ±1 cent
• Wide tuning range: A0–C8
• Adjustable reference pitch: A4 = 430–450 Hz
• Flat tuning support: Regular to two semitones lower
• Advanced metronome function with eight rhythm patterns and ten beat variations
• Tempo range: 30–250 BPM
• Large backlit display for easy viewing of tuning and tempo information
• Built-in speaker for metronome beats and reference tones
• Secure padded clip for stable headstock mounting
• Compact and lightweight design for musicians on the move

Specifications

• Model: TU-03
• Product Type: Clip-On Tuner & Metronome
• Tuning Range: A0 (27.5 Hz)–C8 (4,186.0 Hz)
• Reference Pitch: A4 = 430 Hz–450 Hz
• Tuning Accuracy: ±1 cent
• Tuning Modes: Chromatic / Guitar / Bass / Violin / Ukulele C
• Flat Tuning: Regular–2 semitones lower
• Metronome Tempo: 30–250 BPM
• Rhythm Patterns: 8 types
• Beat Settings: 0–9
• Power Supply: CR2032 lithium battery × 1
• Battery Life: Approximately 8 hours of continuous use
• Auto Power Off: Approximately 5 minutes
• Dimensions: 66 mm (W) × 42 mm (D) × 35 mm (H)
• Weight: 40 g including battery

The BOSS TU-03 Clip-On Tuner & Metronome is a compact and reliable music accessory designed to help musicians stay perfectly tuned and rhythmically consistent. Combining BOSS engineering with practical features such as multiple tuning modes, an advanced metronome, a clear backlit display, and a secure clip design, the TU-03 is an essential tool for guitarists and string instrument players who want to improve accuracy, timing, and overall playing confidence.