Wow. I never knew. Does explain why the C64 Monitor looked so much clearer than my old TV connection.
Quote Originally Posted by wikipedia
Before the mini-DIN plug became standard, S-Video signals were often carried through different types of plugs. For example, the Commodore 64 home computer of the 1980s, one of the first widely available devices to feature S-Video output, used an 8-pin standard size DIN plug on the computer end and a pair of RCA plugs on the monitor end.