Tweaks; do they work?

I have a Cary SLI 80 integrated tube amp and a Cary CDP 308 and Paradigm Studio 100 speakers. I use Virtual Dynamics PCs and ICs and Nordost Red Dawn speaker cable. What tweaks would you recommend? I am interested in some of the CD treatment products. What else? Thanks.

I'm concerned about tweaks that stay on a CDs like the green pen or even sprays. Guess it's because of resale value and unforseen long term damage. I do like the AudioPrism CD Blacklight which is a mat that rests on the CD during play, and then you just take it off. You charge it with light and it glows green and helps with static and CD stability. I don't always use it but it has helped every CD I've tried it on. Particularly older CDs with sub-standard fidelity.

Here are a few tweaks for CD that work:
1. Marigo Orpheus Crossbow CD Mat
2. Torumat CDX-16-3 Disc cleaner
3. Endust Anti-Static sprayed on the Marigo Mat
4. CD Stoplight pen
I have tried these and they work. The Marigo is better than the AudioPrism CD Blacklight mat However, I have not tried the Auric Illuminator kit that Garfish recommended. I would probably go with his suggestion. I hope this helps. Happy Listening! John

What is spary, and where can I get some?

I've always felt that tweaks are in the ear of the beholder. Except of course for the ones that I've indulged in. :o)