Chromatic Tuner


The TU-12 is the tuner that established BOSS quality, reliability and durability as the industry standard.

Reference Pitch
A4 = 440 to 445Hz (1Hz step)
Tuning Range
C1 (32.70 Hz) to B5 (987.77 Hz)
Tuning Accuracy
+/-1 cent
Input, Output, AC Adaptor
Power Supply
DC 9 V Dry Battery, AC Adaptor
Current Draw
20 mA (max.)
Size and Weight
145 mm
5-3/4 inches
53 mm
2-1/8 inches
35 mm
1-7/16 inches
170 g
0 lbs. 6 oz.
*The specifications are subject to change without notice.
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