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TU-2 Chromatic Tuner

Customers had asked for a tuner in compact pedal format for a long time when Boss finally decided to make one, 1998. To Boss’s surprise the new TU-2 was an instant hit. It doesn’t have the accuracy of the TU-12 but the 7-segment LED display and the 11 point LED scale gives perfect tuning information no matter how dark a stage is. There’s 7 tuning modes: Chromatic, Guitar Regular, Guitar Flat, Guitar Double Flat, Bass Regular, Bass Flat, and Bass Double Flat. You can choose to select whether to listen to the sound or mute when tuning and when connected to an AC adaptor, the TU-2 can also distribute power to other effects units.

BOSS TU-2 Chromatic Tuner


  • Controls: None
  • Connectors: Input, Output, Bypass, DC In
  • Current Draw: 55 mA (DC 9V)
  • Weight: 420 g (15 oz.)
  • Sound Generating: A0 to C7 +/-3 cent
  • Reference Pitch: 438 to 445 Hz in 1 Hz step
  • Recommended AC Adaptor: PSA Series


  • Dark Gray – Made In Taiwan

The TU-2 was sold from October 1998 to present.