The MD-30 is a hyper-cardioid condenser microphone is designed for video production and news reporting. Is suited for both room and outdoor use.i50 features excellent sound isolation from the sides and rear of microphone. Durable enough to withstand the rigors of an ENG life, the warm and clear sound for the MD-50 microphone is an excellent choice for broadcasting and enables the iPhone to act as a genuine reporter’s tool. The MD-50 can also be used in conference room as well as an excellent choice for recording voice and live music.