BOSS TU-3 Chromatic Tuner Pedal

BOSS TU-3 Chromatic Tuner – Professional Pedal Tuner with High-Visibility Accuracy

The BOSS TU-3 Chromatic Tuner is the industry-standard tuning solution for guitarists and bass players who demand fast, accurate, and reliable tuning performance on stage, in the studio, and during practice sessions. Built with BOSS's legendary compact pedal design, the TU-3 combines a highly visible LED meter, rugged construction, multiple tuning modes, and precision accuracy to ensure instruments stay perfectly tuned in any performance environment.

Designed as the successor to the popular BOSS TU-series tuners, the TU-3 provides professional musicians with dependable tuning control, silent tuning operation, and pedalboard-friendly functionality. With support for guitar, bass, and chromatic tuning applications, it is an essential tool for modern musicians who require confidence in every performance.

High-Visibility LED Meter for Stage Performance

The BOSS TU-3 features a bright 21-segment LED meter designed for excellent visibility in both indoor and outdoor environments. The high-brightness mode improves readability under strong stage lighting or outdoor conditions, allowing musicians to tune quickly and accurately without difficulty.

The meter provides clear visual feedback, helping players achieve precise tuning adjustments with confidence. The Accu-Pitch function provides visual confirmation when the instrument reaches the correct pitch, making tuning faster and more intuitive.

Professional Tuning Accuracy and Multiple Modes

The TU-3 delivers highly accurate tuning performance with an accuracy of ±1 cent and supports a wide tuning range from C0 (16.35 Hz) to C8 (4,186 Hz). This makes it suitable for a wide variety of instruments, including electric guitars, acoustic-electric guitars, bass guitars, and extended-range instruments.

Multiple tuning modes provide flexibility for different playing requirements:

• Chromatic Mode: Tune any note name across the full instrument range.
• Guitar Mode: Dedicated tuning support for guitar players.
• Bass Mode: Optimized tuning support for bass instruments.
• Flat Tuning Modes: Supports lowered tunings for guitars and basses.

Silent Tuning and Buffered Bypass

When the TU-3 pedal switch is activated, the output is automatically muted, allowing musicians to tune silently during performances without sending unwanted noise through the amplifier or PA system.

The buffered bypass design helps maintain signal quality through longer pedal chains, preserving clarity and consistency throughout a professional effects setup.

Built for Professional Pedalboards

Like all BOSS compact pedals, the TU-3 is built with a rugged enclosure designed to withstand the demands of regular performance use. Its compact footprint integrates easily into pedalboards while providing dependable operation for touring musicians, recording artists, and everyday players.

The TU-3 also features a DC output that can supply power to additional BOSS compact pedals when used with an optional BOSS PSA-series AC adaptor and parallel DC cable, helping simplify pedalboard power management.

Reliable Power Options

The BOSS TU-3 can operate using a standard 9V battery or an optional AC adaptor, providing flexibility for different performance situations. Battery operation makes it suitable for portable setups, while external power allows convenient integration into permanent pedalboards.

Key Features

• Professional chromatic tuner pedal for guitar and bass
• High-visibility 21-segment LED meter
• High-brightness mode for outdoor and stage use
• Accu-Pitch visual tuning confirmation
• Tuning accuracy of ±1 cent
• Chromatic, Guitar, and Bass tuning modes
• Flat tuning support
• Silent tuning with automatic muting
• Buffered bypass for signal preservation
• Rugged BOSS compact pedal construction
• DC output for powering additional pedals
• Compact pedalboard-friendly design

Technical Specifications

• Tuning Range: C0 (16.35 Hz)–C8 (4,186 Hz)
• Reference Pitch: A4 = 436–445 Hz (1 Hz steps)
• Tuning Accuracy: ±1 cent
• Tuning Modes: Chromatic, Guitar, Bass, Flat Tuning
• Display Modes: Cent Mode, Stream Mode
• Bypass: Buffered Bypass
• Input Level: -20 dBu
• Input Impedance: 1 MΩ
• Output Level: -20 dBu
• Output Impedance: 1 kΩ
• Connectors: Input, Output, Bypass, DC In, DC Out
• Power Supply: 9V Battery or Optional AC Adaptor
• Current Draw: 20 mA (80 mA with High Brightness mode)
• Dimensions (W × D × H): 73 × 129 × 59 mm
• Weight: 390 g (including battery)

Why Choose the BOSS TU-3 Chromatic Tuner?

The BOSS TU-3 Chromatic Tuner is a trusted choice for guitarists and bass players who need accurate tuning, reliable operation, and professional performance features in a compact pedal format. With its bright LED display, multiple tuning modes, silent operation, rugged construction, and pedalboard-friendly design, the TU-3 provides the confidence musicians need to stay perfectly tuned on stage, in the studio, and during every practice session.