The 1650E home audio system brings you the advanced Generation D technology, is a functional,easy-to-install, highly compatible, expandable, and used-friendly audio distribution system. Few simple steps to install, it provides up to 50W power by class D amplifier and distribute at most to 40 zones which all can be controlled by packaged keypads and/or IR remote controller. The overall distribution system including package devices is easy-to-install, so every audiophile in every zone can use IR controller or keypads to enjoy the powerful audio.