Boss TU-3 Chromatic Tuner

• 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

SPECIFICATIONS

•  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: 
◦ 20 mA (DC 9 V)
◦ 80 mA (DC 9 V, when High Brightness mode is on)

•  Expected battery life under continuous use: 
◦ Carbon: Approx. 5 hours
◦ Alkaline: Approx. 21 hours
◦ *These figures will vary depending on the actual conditions of use.

ACCESSORIES

•  Accessories: 
◦ Leaflet ("USING THE UNIT SAFELY, " "IMPORTANT NOTE, " and "Information")
◦ Carbon-zinc battery (9V, 6F22)
•  Options (sold separately): 
◦ AC adaptor: PSA series
◦ Parallel DC cord: PCS-20A(DC Plug x8)

SIZE AND WEIGHT

•  Width: 
◦ 73 mm
◦ 2-7/8 inches
•  Depth: 
◦ 129 mm
◦ 5-1/8 inches
•  Height: 
◦ 59 mm
◦ 2-3/8 inches
•  Weight (including battery): 
◦ 390 g
◦ 14 oz

• *0 dBu = 0.775 Vrms