The world’s top-selling stage tuner, the BOSS TU-2, evolves and improves with 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 with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars and 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 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 warranty
Tuning RangeC0 (16.35 Hz)--C8 (4,186 Hz)Reference PitchA4 = 436--445 Hz (1 Hz step)Tuning Accuracy+/- 1 centModesChromatic Chromatic flat x2 Guitar Guitar flat x2 Bass Bass flat x3Display modeCent mode Stream modePower SupplyCarbon-zinc battery (9V, 6F22) or Alkaline battery (9V, 6LR61) AC adaptor (sold separately)BypassBuffered bypassControlsPedal switch MODE button STREAM/CENT buttonNominal Input Level-20 dBuInput Impedance1 M ohmNominal Output Level-20 dBuOutput Impedance1 k ohmRecommended Load Impedance10 k ohms or greaterIndicatorCHECK indicator (Serves also as battery check indicator)ConnectorsINPUT jack OUTPUT jack BYPASS jack DC IN jack DC OUT jackCurrent Draw30 mA (DC 9 V) 85 mA (DC 9 V, when High Brightness mode is on)Expected battery life under continuous useCarbon: Approx. 12.0 hours Alkaline: Approx. 23.5 hours *These figures will vary depending on the actual conditions of use.AccessoriesOwner's Manual 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 WEIGHTWidth73 mm 2-7/8 inchesDepth129 mm 5-1/8 inchesHeight59 mm 2-3/8 inchesWeight (including battery)390 g 14 oz