BOSS TU-3 Chromatic Tuner Pedal

Industry-Standard Pedal Tuner for Accurate and Silent Stage Tuning

The BOSS TU-3 Chromatic Tuner continues the legacy of the legendary TU-series, offering precise tuning, outstanding visibility, and reliable performance for guitarists and bassists worldwide. Featuring a bright 21-segment LED meter, ±1 cent accuracy, and multiple tuning modes, the TU-3 delivers fast, effortless tuning on stage or in the studio. Its rugged pedal design also includes a mute function for silent tuning and a power distribution output for powering additional pedals.

FEATURES & PERFORMANCE

• Sharp 21-segment LED meter with adjustable brightness
• High Brightness mode improves visibility on outdoor stages
• Accurate tuning with precision up to ±1 cent
• Accu-Pitch Sign function visually confirms when tuning is complete
• Chromatic mode automatically detects any incoming pitch
• Dedicated Guitar and Bass modes with support for extended-range instruments
• Flat tuning support for down tuning guitars up to six semitones and bass up to three semitones
• Mute function activates automatically when the tuner is engaged for silent tuning
• DC output jack allows power distribution to additional pedals

IDEAL FOR

• Guitarists and bassists who need fast and precise tuning on stage
• Live performers requiring silent tuning during sets
• Pedalboard users who want to distribute power to multiple pedals
• Musicians seeking a durable, professional-grade tuner pedal

SPECIFICATIONS

• Tuning Range: C0 (16.35 Hz) – C8 (4,186 Hz)
• Reference Pitch: A4 = 436–445 Hz (1 Hz steps)
• Tuning Accuracy: ±1 cent
• Modes: Chromatic, Guitar, Bass, and Flat tuning options
• Display Modes: Cent Mode and Stream Mode
• Power Supply: 9V battery or optional PSA-series AC adaptor
• Bypass: Buffered bypass
• Current Draw: 20 mA (80 mA with High Brightness mode)
• Battery Life: Approx. 5 hours (carbon) / 21 hours (alkaline)
• Dimensions: 73 × 129 × 59 mm
• Weight: 390 g (including battery)