The OPM-3SM is a comprehensive system that combines page stacking, feedback elimination, pre-recorded messaging and background music control into a single device. The OPM-3SM makes feedback through the paging system virtually impossible by opening the loop between the input microphone and speakers. This eliminates the potential for acoustic feedback while giving the user flexibility in the way pages are broadcast. For busy overhead paging systems, the OPM-3SM offers 3 channels of page stacking and feedback elimination. Each channel can record and temporarily store up to 16 pages or 4 minutes of audio. Page input channels can record simultaneously, and while the system is playing. The OPM-3SM offers a priority input that overrides the stacking and messaging functions and provides immediate, real-time access to the paging system. The OPM-3SM also includes a background music input. This allows playback of your favorite music source over the paging system. When a page or message is needed, the music will be faded and the announcement will be heard loud and clear.