Do splitters with DC pass-through have the same signal loss as those
without.


I've found vague things on the web and just now I found some RCA brand
splitters that said nothign about decibels anyhow. (A lot of splitters
say nothing, but RCA!?)

I would only be using one, but if necessary, I can plug the
powersupply in in the attic and use no such splitter.