Boss TU-3 Chromatic Tuner

The world’s top-selling stage tuner, the BOSS TU-3 evolves and improves with the debut of the new TU-3. Housed in a tank-tough BOSS stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars and 6-string basses, while the Flat-Tuning mode can support up to six half-steps. It’s the new-standard tuner that no guitarist or bass player should be without!

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

Specification

• Tuning Range - C0 (16.35Hz)–C8 (4186Hz)
• Reference Pitch - A4=436–445 Hz (1Hz step)
• Tuning Accuracy - ±1 cent
• Power Supply - DC 9 V: Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline)
• Current Draw - 30 mA (DC 9 V), 85 mA (DC 9 V, when High Brightness mode is on)
• Accessories - Owner’s Manual, Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and “Information”), Dry battery/9 V type (6F22)
• Width - 73 mm (2-7/8 inches)
• Depth - 129 mm (5-1/8 inches)
• Height - 59 mm (2-3/8 inches)
• Weight - 390 g (0 lbs. 14 oz.)