Your system is fine. I have a similar one and my Oppo 83 se Nuforce ed is doing a very good decoding job. If your concerning is room correction then I would suggested that you should take a look at minidsp with plug in or new antimode. But before you want to eq anything You should at least measure your room acoustic first. You already have 2 subs that will help to solve a lot of room acoustic problem. IMO, too much eq often do more bad than good. Anyway, a good and big plasma is the one that you should buy next.