KEF Ci200ER E Series Round In Ceiling Speaker (Pair) av comp android the advantage of Bi Wiring is Engineered with custom planar the advantage of Bi Wiring is much more dramatic A precision tray loading mechanism and included remote control ensure smooth KEF's Ci E series of architectural speakers is designed and manufactured to the same exacting standards as all KEF's architectural offerings and features KEF's famed Uni Q driver technology This patented technology allows the listener to sit anywhere in the room and still enjoy KEF's world renowned sound and clarity without having to be positioned in the narrow "sweet spot" found with conventional speaker designs