Ok where to begin, back in 2008 I had a 32" APEX SDTV that had my Wii,etc connected to it. I despised the sound quality of that setup so I purchased an RCA analog to digital audio converter for $20, it's hooked up to my technics SA-DX930 receiver via coax. That significantly increased the sound quality in my setup and in 2012 I added another component to the setup. A XiTel Surroundaround unit ($15) basically what this does is it generates SRS TRUsurround XT virtual surround sound I loved the overall sound quality this produced and it makes my bookshelf speakers sound bigger than they really are in addition to making it seem like I have surround sound. In February 2013 I purchased a Vizio E320-A0 32" LED HDTV which now has my Xbox hooked to it via HDMI, my Wii and phone sound hooked up to it via a splitter (only one shared component composite port), I also have the cable TV hooked into the antenna port which gives me HD locals (all I watch anyway). I'm basically wondering which has the better DAC (the TV or the technics). So I'm pretty much evaluating whether or not the Analog to digital converter is still needed for the best sound quality. Some additional notes are that the Vizio does have an optical out but I don't use it because the optical ports on my technics seem to be busted (happened during a recent move) and because my XiTel only has analog inputs, I would prefer to keep the XiTel in my setup. Any insight is appreciated.