Boss TU3S Chromatic Tuner (Small Version Of TU3)

Manufacturer: Boss
Availability: In Stock
Normally: £87.00
Discount Price: £78.00
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Normally £87.00
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Boss TU3S Chromatic Tuner (Small Version of TU3)

World-Standard Performance in a Tiny Footprint
Ideal for Pedal Boards

Key Points
  • Compact Size
  • 21-Segment LED Meter
  • High Brightness Mode
  • Guitar/Bass Modes


Boss TU3S Chromatic Tuner (Small Version of TU3)

World-Standard Performance in a Tiny Footprint

Boss TU-3S Chromatic Tuner

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


  •     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
  •     BOSS five-year warranty

Tuning Range
    C0 (16.35 Hz)--C8 (4,186 Hz)
Reference Pitch
    A4 = 436--445 Hz (1 Hz step)
Tuning Accuracy
    +/- 1 cent
    Chromatic flat x2
    Guitar flat x2
    Bass flat x3
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)
    Buffered bypass
    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
    CHECK indicator (Power on indicator)
    INPUT jack
    OUTPUT jack
    DC IN jack
    DC OUT jack
    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)
Size and Weight
    73 mm
    2-7/8 inches
    84 mm
    3-5/16 inches
    56 mm
    2-1/4 inches
Weight (including battery)
    220 g
    8 oz
* 0 dBu = 0.775 Vrms


Important Note
Price errors and omissions excepted - An order is considered finalised on dispatch. No monies are debited from your card until the item is in stock or by prior arrangement.

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