I would think if it had any merit at all, the manufactures would have thought of it and maybe included something similar in the box, or redesigned the cd tray. I'd have to agree with a few others, that it very well may throw off the laser reading. To me, my cd's sound fine played in my machine as is. It is more a thing of mastering than anything else. Kudos to the willingness to try it, just not for me, nor is the green pen thing.
If you want the utmost clarity from your CDs
This product has been around for a long time.
Someone mentioned it recently in passing in a post, so I thought I’d give it a try.
For $35, it’s made an amazing difference.
It’s Herbie’s Super Black Hole CD Mat.
Considering How much I’ve spent changing components in order to achieve better SQ, this cheap little device is ridiculous!
The difference in clarity is palpable.
If you haven’t tried it you owe it to yourself.