Main difference between a 4K HD splitter and a 4K HD matrix

4K HD matrix takes multiple sources (Xbox, Roku, cable box, etc.) and sends one cable to your TV or other device

4K HD splitter takes one source and sends it to multiple TVs

HD connections are found on every MOand pretty much everything you connect to a TV: from playstations to steaming devices, AV receivers to cable boxes and soundbars. Most people own TVs that have enough HD inputs to handle all of their connected devices. But what if you buy another sweet piece of gear and find that your TV doesn't have enough slots anymore? And some people have the opposite issue: one source device they want to appear on multiple TVs. In both cases you'll need either an HD matrix or an HD splitter.

4K HD splitters: One source, multiple TVs

If you have one source, and want to send that source's signal to multiple TVs, you need an HD splitter. Maybe that TV is in a different room, or maybe in the same room you have a TV to watch during the day and a projector to watch at night. A splitter will duplicate a signal and send it out through multiple HD cables. Some splitters are also matrixes, with multiple "ins" and multiple "outs."

4K HD matrixes: When you don't have enough inputs

The prime reason to get an HD matrix is if your TV, AV receiver or soundbar has too few inputs for the number of sources you have. 

For instance, your TV has two HD inputs and you have a cable box, a Roku, and an Xbox. I'm sure many of you have both an Xbox and a PlayStation and have to swap HD cables to play a game on the other. A matrix would help there, too. Fortunately, they aren't that expensive.

The characteristics of 4K HD splitter and 4K HD matrix make it widely used in high-definition LCD TV sales display places, conference rooms, schools, and some training institutions.