The Boss TU-3 tuner is the further development of the tried and tested TU-2 Pedal tuner. Compared to the predecessor, the display has been altered - with 21 LEDs, the display is even more accurate and easily readable. The high-brightness mode is available for daylight operation, an extra-bright display that can also be seen in direct sunlight. Like the predecessor, the TU-3 is chromatic and offers a range from C 0 to C 8.

• Instrument: Guitar and bass
• Design: Floor
• Chromatic: Yes
• Metronome: no
• Cent mode (display like classic tuner) or STREAM mode (running light display)
• 21 Light elements in the display chain (instead of 11)
• Optical confirmation at correct pitch (ACCU PITCH, two lights in the center from the sides)
• Extremely bright display mode selectable (HIGH BRIGHTNESS MODE) for use in daylight
• Chromatic voices according to sheet music or voices by string numbers 1 to 6
• FLAT-TUNING for hard rock / metal up to 6 halftones lower
• Mute or bypass when tuning (OUTPUT or BYPASS jack)
• Huge tuning range from C0 (16.35 Hz) to C8 (4.186 Hz), also for 7-string guitars and 6-string basses
• Accuracy +/- 1 cent
• Reference tone adjustable from 436 to 445 Hz
• Battery (30mA power consumption = 14 hours of continuous operation) or power supply (BOSS PSA-230 or PSB-230)
• Power supply of 7 additional effect pedals by DC OUT socket + optional BOSS PCS-20a distribution cable + BOSS power supply PSA-230 or PSB-230
• The Boss TU-3 tuner is the further development of the tried and tested TU-2 Pedal tuner. Compared to the predecessor, the display has been altered - with 21 LEDs, the display is even more accurate and easily readable. The high-brightness mode is available for daylight operation, an extra-bright display that can also be seen in direct sunlight. Like the predecessor, the TU-3 is chromatic and offers a range from C 0 to C 8.