Sennheiser MMD 935-1 - Dynamic Cardioid Microphone Module for G3 or 2000 Series SKM Transmitters - Blue It can handle high Sound pressure levels, the MMD935-1 is also very effective at rejecting Feedback. Uniform on-axis and off-axis response Add the MMD935-1 to the SKM2000 wireless handheld system for quality Sound. Can be installed in seconds without tools.