The AMC105-2 is a dual zone omnidirectional microphone designed especially for fixed or gooseneck mounting in quality sound installations. A smooth, wide band frequency response with a slight intentional "presence" boost at 2000 Hz gives a "natural" , crisp, highly intelligible sound. Two DPDT sealed micro switches, with color coded buttons for easy identification, permits paging in two areas, and an all-call features obtained by depressing both buttons simultaneously. The AMC105-2 is extremely rugged and reliable, and will stand up under the most strenuous handling conditions to provide years of dependable service.