BOSS
TU-3
The TU-3 is a pedal-type chromatic tuner that condenses BOSS's tuner expertise. Its rugged enclosure houses a smooth 21-LED meter display and an Accu-Pitch Sign function that visually confirms when tuning is complete. With a high-brightness mode for outdoor visibility and a full set of modes including guitar/bass and flat tuning, it is a pedal tuner used around the world as a standard.
The standard pedal tuner for reliable tuning on stage
Announced in 2009 as the successor to the TU-2, which debuted in 1998 as the world's first pedal tuner. It carries over the ease of use and ruggedness while improving tuning accuracy and visibility.
21-LED meter display
Twenty-one LEDs display the tuning status smoothly, and the Accu-Pitch Sign function signals completed tuning with an LED animation. The display can be switched between CENT, modeled on a needle meter, and STREAM, which shows sharp or flat pitch as a flow of light.
Tuning modes with string-number display
Alongside chromatic mode, which shows note names in semitones, guitar/bass modes display string numbers, supporting 6- and 7-string guitars and 4- to 6-string basses. Flat tuning can be set down to 6 semitones in guitar mode and 3 semitones in bass mode.
Features for stage use
A high-brightness mode improves visibility outdoors, and the signal is muted the moment the tuner engages, allowing silent tuning. The DC OUT jack can also supply power to other compact pedals.
- Smooth meter display with 21 LEDs
- Accu-Pitch Sign confirms completed tuning
- High-brightness mode for outdoor visibility
- Modes for 6- and 7-string guitars and 4- to 6-string basses
- Flat tuning down to 6 semitones
- DC OUT powers other pedals
Videos
Specifications
| Manufacturer | BOSSOpens in a new tab |
|---|---|
| Product | TU-3Opens in a new tab |
| Type | Utility |
| Functions | Tuner |
| Release year | 2010 |
| Power | 9V manganese or alkaline battery / AC adapter (sold separately) |
| Current draw | 20mA（DC9V） / 80mA（DC9V、高輝度モード・オン時） |
| Dimensions | W73 × H59 × D129 mm |
| Bypass | Buffered bypass |
| Status | Available |
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