Relacart M-D33 Dynamic Microphone Module. suitable for professional live sound reinforcement and studio recording. The wide frequency response curve enhances vocal clarity, and the supercardioid polar pattern ensures high gain before feedback, optimum sound isolation and minimal off-axis noise .  M-D33 is ideal for vocal leads, especially in high SPL environments. Using the unique dual-diaphragm patented technology, it can effectively reduce hand touch noise, the sturdy steel mesh cover and high-quality shell can meet the requirements of high-intensity daily sound reinforcement applications.M-D33 is compatible with Relacart H-33 handheld wireless microphones as well as Sennheiser some handheld wireless microphones.