Newbie here. Recently got a sampo 27inch for the bedroom. Found out it didn't have an internal line doubler so I'm running my dvd player and cable (through webtv plus unit) into a dvdo iscan pro. My question is on direct view tv this size is a line doubler important. I think it works great and I see a difference from using the tv inputs themselves. but before this I just had an old tv with coaxial input so all this high defintion stuff is new to me. Anyone else use the iscan with their direct view.