The PA66 home audio system is a functional, easy-to-install, highly compatible, expandable, and used-friendly audio distribution system. In a few simple steps it provides up to 100W power per zone up to 18 zones which all can be controlled by packaged keypads, IR remote or 3rd party control system. Please note that use of the PA66 app is dependent on setting up the integrated Wifi adapter. Please refer to the manual for information and instructions on obtaining and installing the PA66-Wifi App.