Sony ECM-MS2 (ECMMS2) Stereo/Mono Electret Condenser Microphone with 2x XLR3P Outputs. The ECM-MS2 is an MS stereo electret condenser microphone designed for mounting on professional camcorders equipped with two XLR inputs and phantom powering. The ECM-MS2 delivers excellent sound performance in field and studio production applications at an affordable price. The MS microphone signal of the ECM-MS2 is internally decoded and it provides L and R (stereo) outputs. The MS2 stereo microphone also supports mono operation by simply unpluging the right channel (disabling phantom power from the right channel XLR connector).