Used Boss TU-3 Tuner Pedal

Boss TU-3 Chromatic Tuner Pedal

“Tune with Confidence”

A Rugged Stage Tuner with Precision and Power

The Boss TU-3 is the industry-standard pedal tuner trusted by guitarists and bassists worldwide. Housed in Boss’s iconic stompbox enclosure, it features a 21-segment LED meter with High-Brightness mode for clear visibility—even under harsh stage lights. With support for chromatic, guitar, and bass tuning modes (including 7-string guitars and 6-string basses), the TU-3 delivers fast, accurate tuning in any setting.

The Accu-Pitch Sign function provides visual confirmation when tuning is complete, while the built-in mute function allows silent tuning during live sets. Plus, the TU-3 can power up to seven other Boss compact pedals, making it a utility powerhouse for any pedalboard.

Highlights

• 21-segment LED meter with High-Brightness mode

• Chromatic, Guitar, and Bass modes with flat tuning support

• Accu-Pitch Sign for visual tuning confirmation

• Mute function for silent tuning

• Powers up to seven Boss compact pedals via daisy chain

Specifications

• Type: Chromatic tuner pedal

• Accuracy: ±1 cent

• Modes: Chromatic, Guitar, Bass, Flat tuning (up to 6 semitones)

• Power: 9V battery or PSA-series adapter

• Connectivity: Input, Output, Bypass

• Bypass: Buffered

• Application: Guitar, bass, live performance, studio use

• Origin: Japan

Artists and Use Cases

Trusted by pros from stadium tours to studio sessions:

• Ideal for guitarists and bassists needing reliable stage tuning

• Popular in pedalboard setups for its utility and durability

• Used in studio rigs for precise intonation adjustments

• A favorite for its visibility, accuracy, and power distribution

Ready to Tune with Confidence?

The Boss TU-3 is more than a tuner—it's a pedalboard essential. Add it today to your rig and stay pitch-perfect, gig after gig.