I couldn't wait until my favorite music from the late 60's and early 70's "came out " on CD in the late 80's. I loved the music but was never careful with the albums. Now that I have upgraded my stereo system, ( Van Alstein amp / pre amp, Cambridge CD, Gallo speakers) all of my CD's that are "re-isued" 60's and 70's music, which is a sizeable portion of my collection, sound like crap compared to the more carefully engineered modern day CD's. I have hundreds of these things. They just plain sound flat compared to modern stuff. I remeber the vinyl sounding better. This is a tough one but, is there anyting I can do to add some soundstage and spark to badly engineered early CD's? Is there some post processing I can use? My CD player is a Cambridge 640 and I think it sounds impresssive with modern CD's. Its the older ones that need to be enhanced and the DAC and Upsampling capabilities seem to have no power to make a badly transferred CD sound better.

Going back to vinyl is not an option for me. there is just too much music to replace.
Your opinions please. Thanks Daviethek