oh I think I should add that I own an Marigo labs stealth cd mat from the same team that designed the Dots and I'm pleased with the subtle benefits it brings to every disk I play.
I also believe that the shun mook disks do have a very subtle effect especialy when used on cabl;e posts and on top of speakers.
Expensive and wacky yes but you don't know unless you try!
I guess these purchases put me firmly in the lunatic camp with money to waste camp!