Boss TU-3 Chromatic Tuner

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    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... Read more

      $109.99

        • Shipped today? Order within: Jul 07, 2026 17:00:00 -0500

        SKU: TU3
        Barcode: 761294409664

        Size chart

        Product Description

        • 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
        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
        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
        *The specifications are subject to change without notice.

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