Boss TU-3 Chromatic Tuner Pedal

The Boss TU-3 is a chromatic tuner that works well with both guitars and bass guitars. It features modes for bass and guitar (organized by the number of strings, so it works adeptly with 7 string guitars and 6 string basses), chromatic tuning, and flat tuning. It can also power up to seven Boss pedals.

TU-3 Features

• 21-segment LED meter with brightness control
• High-Brightness mode enhances meter visibility outdoors
• Accurate to +/- one cent
• Accu-Pitch Sign function provides visual verification when tuning is complete
• Chromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses)
• Flat tuning is supported with Guitar Flat mode, which allows for “drop” tunings up to six semitones below standard pitch
• Tuner automatically mutes when the tuner is on
• Supplies power for up to seven BOSS compact effect pedals
• BOSS five-year warranty