The Sennheiser MD 431 II is a supercardioid dynamic microphone designed for professional vocal applications in live sound, broadcasting, and studio recording. Featuring a custom-tailored frequency response for enhanced audio transparency, it delivers exceptional feedback rejection with a nearly frequency-independent polar pattern. The microphone incorporates a shock-mounted capsule for effective handling noise rejection, a hum-compensating coil, and an integral pop filter. Its rugged construction includes a steel-mesh grille and noiseless magnetic reed on/off switch. Operating in the 40-18,000 Hz frequency range, it requires no phantom power and connects via 3-pin XLR.