Chromatic Tuner - Convenient Pedal-Based w/21-segment LED meter
Availability: Out of stock

The New World-Standard Tuner Has Arrived
The world’s top-selling stage tuner, the BOSS TU-2, evolves & improves w/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 w/a High-Brightness mode that cuts through the harshest outdoor glare.
Choose between Chromatic or Guitar/Bass tuning modes, & enjoy visual pinpoint tuning verification w/the Accu-Pitch Sign function.
The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars & 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!
21-segment LED meter w/brightness control
High-Brightness mode enhances meter visibility outdoors
Accu-Pitch Sign function provides visual verification when tuning is complete
Chromatic & Guitar/Bass mode (tune by string number, w/support for 7-string guitars & 6-string basses)
Flat tuning is supported w/Guitar Flat mode, which allows for drop" tunings up to six semitones below standard pitch
Signal is automatically muted when the tuner is on
Supplies power for up to 7 BOSS compact effect pedals
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), AC Adaptor (PSA series: optional)
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," & Information"), Dry battery/9 V type (6F22)
Options AC adaptor: PSA series, Parallel DC cord: PCS-20A
Size & Weight
73 mm 2-7/8 inches
129 mm 5-1/8-inches
59 mm 2-3/8 inches
390 g 0 lbs.
14 oz.