Shure MX392/C Condenser Microphone - Cardioid Flat frequency response across the vocal range for uncolored sound. Sleek, low-profile design for unobtrusive appearance. Balanced, transformer less output for increased immunity to noise over long cable runs. Programmable membrane on/off switch plus LED on/off indicator. LED logic input and switch logic output terminals for remote control or use with automatic mixers. Includes: Surface-mount mic; LED logic input/switch logic output terminals, screw terminal connections, attached unterminated cable