Where is my weakest link?

My system consists of Rotel front end (rdv1080 dvd,rsp976 pre/pro.) The amp is a B&k 5000 and the speakers are Paradigm Studio 100's with other paridigms throughout. I use the system for both HT and music. Movies sound good but I need a good upgrade for 2 channel lisening.I am thinking of trying the Music Fidelity A324 to get that extra little something out of the the stereo music I listen to. Any help would be greatly appreciated. BTW I am using all PS Audio power cords and Sinergystics and Straight Wire interconnects. Again thanks for listening.