Possibly you are missing the Loop4 software. (edp will tell you when you boot it up)Otherwise the hardware difference is that the blackface was modified to comply with EU laws.
(not an improvement as such) andy Matt Yeates wrote:
I couldn't wait any longer for a black Gibson DPP to surface on eBay, so I bought a white Oberheim EP for $560. What exactly am I missing out on from the most recent version released by Gibson?