Elan S12 8-Zone System Controller. The S12 is Elan's most powerful and flexible multi-source / multi-zone controller to date. Directly addressing the need to distribute more AV sources to more rooms, the S12 has line-level inputs for 12 audio sources and a built-in high definition video switcher for the distribution of both composite and component video sources. Additionally, the S12 has eight local source inputs, allowing you to place private audio sources in each zone (e.g. a CD player in the master bedroom). The on-board video switcher provides the ultimate in flexibility. The S12 can route up to 16 composite video sources to any of its 16 video outputs. It can also be configured to distribute up to five componentvideo sources to up to five zones to provide house-wide high definition video distribution.