CIOKS - Why we use RCA connectors..?

Why do we use the RCA plugs and sockets..? There are 4 reasons: 1. They are more robust and durable. 2. You get a much better mechanical connection. 3. You get a much better electrical connection. 4. You will not confuse input and output of the cables. Watch the video and find out in detail why the RCA connectors are better than the more common DC connectors.