Korg CM300BK Contact Microphone for Korg Tuners

.its built-in piezo element sends your instrument's vibrations directly to your handheld tuner. Thanks to the CM300, you'll benefit from high-precision tuning on noisy stages and in the midst of large ensembles. It offers more durability and resistance to stress than its predecessor, along with improved sound transmission performance, by virtue of its redesigned cable. If you use a Korg handheld tuner, the CM300 is a must-have add-on accessory.