HDMI Matrix is a perfect matrix product with datached external audio output ports, which can connect 4 different HDMI signal sources and 2 display. It can easily switch any 1 r 2 of 4 input signals to 2 displays by using remote control or pushing button. The output signals can be same or different. By using thi product can avoid the need to disconnect and reconnect signal sources to display frequently. It can asmartly select input signal sources with priority order and jump over those input signal sources which are not in work. It can optimize your home theatre system to the best effect.