BOSS Chromatic Tuner for Pedalboard
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Boss Chromatic Tuner for Pedalboard

SKU: BSTU3S

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Boss TU-3S 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 x 2
    Guitar
    Guitar flat x 2
    Bass
    Bass flat x 3

  • Display mode

    Cent mode
    Stream mode

  • Power Supply

    AC adaptor (sold separately)

  • Current Draw

    35 mA (DC 9 V)
    95 mA (DC 9 V, when High Brightness mode is on)

  • Bypass

    Buffered bypass

  • Controls

    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 Ohm or greater

  • Indicator

    CHECK indicator (Power on indicator)

  • Connectors

    INPUT jack
    OUTPUT jack
    DC IN jack
    DC OUT jack

  • Accessories

    Owner's Manual
    Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
    Parallel DC code (DC Plug x2)
    Rubber foot

  • Options (sold separately)

    AC adaptor: PSA series
    Parallel DC cord: PCS-20A (DC Plug x8)

  • Dimensions (W x D x H)

    73 x 84 x 56 mm (2-7/8 x 3-5/16 x 2-1/4")

  • Weight

    220 g (0.5 lbs)

  • UPC Code

    761294508978

About Boss TU-3S

World-Standard Performance In A Tiny Footprint.

The BOSS TU-3 is the world's go-to stompbox tuner, trusted by players everywhere for its reliable operation and bulletproof durability. Scaled down in size, the TU-3S gives you the same industry-standard performance in a tiny footprint that saves precious pedalboard space. The display and tuning functions are identical to the TU-3-the only thing eliminated is the pedal switch. Always on and ready to go, the TU-3S is perfect for use with pedal switching systems like the BOSS ES-8 and ES-5, and ideal for any setup where space is at a premium

Boss TU-3S Features

  • Respected TU-3 tuning performance in a more compact size
  • 21-segment LED meter with brightness control
  • High Brightness mode enhances meter visibility outdoors
  • Accu-Pitch Sign function provides visual verification when tuning is complete
  • Chromatic and Guitar/Bass modes, with support for 7-string guitars and 6-string basses
  • Guitar Flat mode supports"drop" tunings up to six semitones below standard pitch
  • Powered by optional PSA-series adapter; DC Out jack for powering up to seven BOSS compact effect pedals via an optional PCS-20A daisy-chain cable

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Key Features

  • Respected TU-3 tuning performance in a more compact size
  • 21-segment LED meter with brightness control
  • High Brightness mode enhances meter visibility outdoors
  • Accu-Pitch Sign function provides visual verification when tuning is complete
  • Chromatic and Guitar/Bass modes, with support for 7-string guitars and 6-string basses
  • Guitar Flat mode supports"drop" tunings up to six semitones below standard pitch

What's in the box:

  • Chromatic Tuner
  • Owner's Manual
  • Leaflet
  • Parallel DC code (DC Plug x 2)
  • Rubber Foot
  • BOSS 5 Year Warranty