The system controller accommodates a maximum of 5 rooms, combined in any adjacent arrangement. Audio inputs from each room are Line only, MICLINE dynamic mic, MICLINE condenser mic. A front-panel level knob with LED metering is provided for each room input. MUSIC and PAGING inputs may feed each room if desired. Two RCX-5Cs may be linked in larger systems where two groups of rooms need to be combined. The standard RCX-5C does not mute mics in a room while listening to music. - Power Supply Included...