TUNER MICROPHONE Newly designed Korg CM-300 contact microphone. Directly capture the sound of your instrument in style. A piezoelectric clip-on microphone that is specially designed for tuners. The CM-300 is a contact microphone that can be attached to the bell of any wind instrument, to the bridge of a violin or even to a guitar or ukulele. The microphone uses a part that directly picks up the vibrations of the instrument and sends them to the tuner. The CM-300 is a must-have item in situations where the built-in microphone in the tuner might have a hard time detecting the sound of your instrument, for example when you are practicing with an entire band. Maximum width of the clip: 30mm. 1.5m cable with new stronger design. Black color.