In Stock. The KBM412 is a large diameter, Neodymium dynamic microphone, specifically designed for bass drum and other low frequency sources. Packaged in a rugged die-cast body with a hardened external screen providing additional protection from incidental striking. The KBM412 was designed to provide extended low-end frequency response, along with high SPL handling capability The KBM412 delivers exceptional performance as a kick and large tom microphone and will deliver excellent performance when used to mic bass and large diameter percussive instruments and other similar applications.