Boss TU-3 Chromatic Pedal Tuner

Code: BOSSTU3

Housed in a 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.

105.01

In Stock



 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!

FEATURES

  • 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 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 
  • 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)

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