What is an HDMI Matrix switch?
It is an HDMI switch that allows 2 or more inputs to be connected to 2 or more outputs simultaneously, for example a 2 x 2 HDMI matrix switch has two inputs and two outputs, we could connect a blu ray DVD to input 1 and a Sky HD box to input 2, output 1 and output 2 would be connected to the displays, eg 2 plasmas or a plasma and a projector. With a matrix switch each output can connect to any input ie we could watch a blu ray DVD on display 1 and 2 or Sky HD on display 1 and blu ray on display 2 etc. A matrix can be configured to perform the same function as an HDMI splitter although they tend to cost more money.