Korg - OT-120 Orchestral Tuner

Tune wind and string instruments in a flash with the new OT-120, a needle-type meter with a wide range and versatile functionality.


  • Vertical design and superior visibility
  • Accurately tune a wide range of orchestral instruments
  • Broad support for transposing instruments and historical temperaments
  • Smooth and high precision tuning you expect from a needle-type meter
  • Energy saving design for long batter life
  • Korg's proprietary Sound Back mode provides  a reference tone that's ideal for tuning wind or string instruments, or for lessons
  • Soft case included


  • Scale: 12 equal tempered, Pythagorean, Werckmeister III, Vallotti, Mean Tone Eb, Kirnberger III, Young, Mean Tone D#, Kellner
  • Transpose Range: C, C#, D, Eb, E, F, F#, G, G#, A, Bb, B
  • Detection Range: Chromatic: A0 (27.50 Hz) - C8 (4,186 Hz)
  • Reference Tone: C2 (65.41 Hz) – C7 (2093 Hz), five octave, two-step volume control
  • Calibration Range: A4 = 349 – 499 Hz (1Hz steps)
  • Detection Accuracy: ± 1 cent
  • Sound Accuracy: ± 1.5 cent
  • Power Supply: Two AAA batteries (3V), or AC adapter (separately sold)
  • Battery Life: Approx. 100 hours (with alkaline batteries, in meter mode (MEDIUM), A4 tone continuously input, without backlit)
  • Dimensions: 74 x 120 x 36 mm / 2.91” x 4.72” x 1.42”
  • Weight: 193 g (including batteries) / 6.81 oz. (including batteries)

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