I currently own an Onkyo HT-S5300 Home Theater system and would like to purchase a good set of headphones to go with my system. I have heard that the AKG K702 Anniversary provides an ideal mix between gaming performance and cinema quality. I will be running a 360 and a blu-ray player through the receiver and ideally use the 702s when a surround system is not an option (live in an apartment). My question is whether or not the HT-S5300 will provide the best quality or if I need to consider an amp for the phones. I am also open to alternative set-ups if anyone has suggestions.