The C 301EN-RF is a rigid stem cardioid microphone with a knuckle joint with an integral PPA terminating in a Male 3 Pin XLR with 180mm long in satin nickel. The Cardioid Condenser Microphones designed for use in conference halls, places of worship, broadcasting and paging systems. he microphone is constructed from high quality brass construction and is fitted with a knuckle joint allowing horizontal rotation and vertical adjustment. The Electret condenser microphone has a cardioid polar pattern and slimline profile design.