The EZSYS-BGM-CPHD package is an entire business music and paging system. It includes a patented self-diagnostic technology called "Push Here Diagnostics". The system package includes the proper amplification, system control, and speakers. All you need are audio sources and cables. The box illustrates the proper way to connect the equipment including cable and tool requirements. Includes 1 - AA50PHD 50 Watt Amplifier, 1 - WPD-RISRL Remote Wall Controller, 6 - SD72W Ceiling Speaker and 6 - 81-8R Ceiling Support Tiles.