The MCP-90 series microphones are phantom powered, back-Electret, gooseneck microphones. The back-Electret feature provides greater sensitivity, wider frequency response, and superior immunity from handling noise than a diaphragm-Electret microphone. The removable windscreen provides pop filtering, response-shaping and overload protection to further enhance the acoustic performance of the microphone. The MCP-90 microphones are mechanically designed for quick, easy mounting to RTS keypanels and selected Audiocom intercoms. The frequency response is tailored for full-range sound reproduction with natural sound pick-up optimized for closeup use. The microphones are fitted with a threaded TRS male connector is compatible with RTS standard threaded TRS female connectors. The MCP-90 series is designed to be phantom powered with a wide voltage range of 1.5 to 9VDC.