The Sony ECM-MS2 Stereo Electret Condenser Microphone is designed for mounting on professional camcorders equipped with 2 XLR inputs and phantom powering. The microphone also delivers good sound performance in field and studio production applications. The MS microphone signal of the ECM-MS2 microphone is internally decoded, and provides L and R (stereo) outputs. The MS2 stereo microphone also supports mono operation by simply unplugging the right channel (disabling phantom power from the right channel XLR connector).