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Boss TU-3 Chromatic Tuner Pedal

• 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 warrant

Tuning Range:

C0 (16.35 Hz)--C8 (4,186 Hz)

Reference Pitch:

A4 = 436--445 Hz (1 Hz step)

Tuning Accuracy:

+/- 1 cent

Modes:

Chromatic
Chromatic flat x2
Guitar
Guitar flat x2
Bass
Bass flat x3

Display mode:

Cent mode
Stream mode

Power Supply:

Carbon-zinc battery (9V, 6F22) or Alkaline battery (9V, 6LR61)
AC adaptor (sold separately)

Bypass:

Buffered bypass

Controls:

Pedal switch
MODE button
STREAM/CENT button

Nominal Input Level:

-20 dBu

Input Impedance:

1 M ohm

Nominal Output Level:

-20 dBu

Output Impedance:

1 k ohm

Recommended Load Impedance:

10 k ohms or greater

Indicator:

CHECK indicator (Serves also as battery check indicator)

Connectors:

INPUT jack
OUTPUT jack
BYPASS jack
DC IN jack
DC OUT jack

Current Draw:

30 mA (DC 9 V)
85 mA (DC 9 V, when High Brightness mode is on)

Expected battery life under continuous use:

Carbon: Approx. 12.0 hours
Alkaline: Approx. 23.5 hours
*These figures will vary depending on the actual conditions of use.

Accessories:

Owner's Manual
Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
Carbon-zinc battery (9V, 6F22)