This 6 source / 6 zone Class D matrix amplifier system delivers 12 x 50 watts @ 4 ohms or 12 x  25 watts @ 8 ohms and is expandable to a maximum 18 zones. Inputs include 6 x RCA and 2 x 3.5mm analog, as well as 1 x optical. Zone outputs to the speakers are bridgeable for 100W per zone and pre-amp RCA outputs are supplied for connection to external amplifiers and/or powered subwoofers. The system is controllable by key pads, remote control or RS232. There is a built-in IR repeater to control source inputs from any zone, as well as a 12V trigger output to activate an external device or amplifier. This system includes 6 key pads, IR remote control, rack ears and built-in overload, short circuit and thermal protection.