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The Korg OT-120 is a precise, versatile tuner in an upright design - specially developed for musicians in the orchestra and big band sector.
- Chromatic tuner with large detection range for wind and string instruments
- Dual display: needle display and LED display
- Sound-back mode for targeted ear training (only with separate CM-300)
- Supports historical tunings and transpose mode for wind instruments
- Three selectable response speeds for needle deflection
- Manual and automatic tuning mode
- Reference tone generation over five octaves
- Wide calibration range: 349-499 Hz
- Integrated microphone for acoustic instruments
- Long battery life thanks to energy-saving design (over 100 hours)
- Velour soft case included
A high-quality tuner with sophisticated functionality and elegant design - ideal for professional demands.
Frequency rangeA0 (27.50 Hz) - C8 (4186 Hz)
Calibration rangeA4 = 349 - 499 Hz
ConnectionsINPUT, OUTPUT (1/4" jack sockets), DC IN
Power Supply2 x AAA batteries (not included) or separately available mains adapter
Dimensions 74 x 120 x 36 mm / 2.91" x 4.72" x 1.42"
Weight 193 g / 6.81 oz. (incl. batteries)
Since its founding in 1963, KORG has pioneered innovative musical instruments, including the first Japanese synthesizer and the world s first needle-type tuner. Their instruments continue to set the standard for uncompromising quality, inspiring professional artists and composers worldwide. Designed with intuitive interfaces, KORG instruments cater to a wide range of users, meeting the needs and desires of musicians globally.

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