The Korg CM-300 Contact Microphone is designed for accurate, noise-free tuning in any environment. Its clip-on design securely attaches to the bell of a brass instrument or the bridge of a string instrument, capturing vibrations directly for precise pitch detection—even in loud settings. Featuring an improved clip for better stability and a longer cable for flexibility, the CM-300 works seamlessly with most tuners, including Korg’s popular models.