I have not decided on which amp I would rather use on the subs and the fronts. Any ideas by the specs? Thank you on identifying the board brand as well. When I plug in a 3.5mm jack into one of the front ports the Realtek HD software asks me what i just plugged in, I can choose between in/out/sub/center/mic, and so on. Think id be able to plug the sub into the front jack and the front speakers into the rear audio output jack? Or am i just better of splitting it like the diagram you have shown.