You've probably already read this but just in case. http://www.positive-feedback.com/Issue26/nuforce9se.htm
Personally, I think you should forget about the amp and player and get some different speakers. I doubt your hearing the full potential of your current amp and player. Correct me if I'm wrong, anybody. Wasn't the design goal of many dynamic speaker designers in those days to integrate the sound of multiple drivers. Since crossover technology was just beginning to be refined and very expensive, they simply moved the drivers closer and closer together? KEF sort of won the battle by developing a coaxial single driver UniQ system? With the tweeter buried in the woofer cone the system is very directional hampering imaging and the soundstageing. Not to be confused with some modern horn loaded highly sensitive single driver systems you see today being driven by SET's, KEF's Uni Q driver loaded in their Coupled Cavity produces a 92db 4ohm load. Excellent bass, for those day's, that falls of rapidly after 50Hz.
My suggestion would be to look for some used Hales, Vandersteen, Avalon, or Thiel's. Even their smaller two ways would be such an improvement you would then be able to more fully hear the fruits of your component upgrades.
Of course that's just my opinion, I could be wrong.
