The BOSS TU-3 Chromatic Tuner is a rugged stompbox tuner trusted by countless musicians worldwide. This high-visibility tuner features a smooth 21-segment LED meter and Note Name Indicator that supports 7-string guitars and 6-string basses. Choose between Chromatic and Guitar/Bass modes for precise tuning and the Accu-Pitch function gives you visual confirmation when tuning is complete. With a durable stompbox design, the TU-3 is built to withstand the rigors of touring and designed for fast operation, even in the noisiest of environments. The TU-3 is an essential pedal for any performing guitarist or bassist.

High-Visibility LED Display

The TU-3 features a bright 21-segment LED meter display, with selectable brightness levels for optimal visibility on any stage. Easily tune your instrument in even the harshest outdoor glare or dimly lit clubs. The Note Name Indicator displays notes for 7-string guitars and 6-string basses, ensuring precise intonation for any instrument.

Chromatic and Guitar/Bass Modes

Choose between Chromatic mode for tuning all instrument types or Guitar/Bass mode for tuning electric guitars and basses. In Guitar/Bass mode, the TU-3 automatically detects the pitch of each string and highlights the closest note name, while also indicating sharp or flat. Chromatic mode is ideal when tuning instruments like acoustic guitars, violins and more.

Road-Ready Design

Housed in a durable die-cast aluminum stompbox body, the TU-3 is built to last through years of performance and travel. Its highly visible LED display and stompbox design allow for fast, accurate tuning on any stage. Powered by a 9V battery or optional AC adapter, the TU-3 provides dependable performance for any gig situation.

Essential for Any Pedalboard

With its compact size and road-tough build, the TU-3 is perfectly suited for any pedalboard. Its highly accurate tuning and visual verification ensure your instrument is perfectly intonated before each performance. For guitarists and bassists at any level, the BOSS TU-3 is an essential pedal that produces flawless results every time.