@slaw I ordered 1 around 10 years ago. Got about 5 years use out of it. After a while the adhesive texture wears thin even when damped with a cloth. Never had an issue with thickness has to be less then 2mm. It did take a slight treble edge off my North Star Sapphire.
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.