DIGITAL UPGRADE DILEMMA

My most recent speaker upgrade - Revel F50s - has made a considerable improvement in sonic detail and range, but I'm still sensing a lack of "analog" presence and realism. I'm starting to think the culprit might be my source, even though I also recently upgraded my DAC. Other candidates include so-so interconnects and an older amplifier. Does anyone have any thoughts on the best place to start in rectifying this problem? Could I find an one-box CD player for under $1000 that might make a difference? I'm not looking for a magic bullet here, just the most significant place to start. Here's a listing of my components. Your thoughts are appreciated.
Revel F30s
Parasound 1200 Mk II amp
conrad johnson PV10B pre
parasound PLD-1000 CD
proceed PDP 3 DAC
tara labs/audioquest inter.
harmonic tech melodyline cables

-Greg