weakest link

I'm using aq quartz interconnect and have used aq cv4 and ocos speaker cable.

What wires are you using? I used to have adcom too and a cheap cd player.Oh boy I'll tell you the best thing you could do is upgrade you interconnects then your speaker wire. They are just as important as any componant is. I strongly recommend MIT. You'd be surprised at how much more you can get out of your system. (Try MIT terminator 2's) Its priced very fair.

I would definitely start with the CD player. Now day's you can purchase "superb" CD player for the fraction of the original price. I would check used Adcom 750 cd player, which would be great with your Adcom amp. Also down the road you can get the Adcom pre-amp,GFP-750. It is nothing wrong with having all one brand separates, leaves you with less chance for mistakes. Especialy, if the brand is as good as ADCOM. Good luck!