Can anyone tell me what the difference is between a balanced interconnect and a regular RCA interconnect? I mean, I have been using regular RCA interconnects till now - can I just switch to "balanced" (xlr) interconnect? Would it improve sound quality? CD player is the Cyrus CD 6S and amp is Rotel RA 1062. I see the xlr plug is actually different from the RCA plug, so I suppose the piece of balanced hi-fi equipment must come with special xlr sockets.