Well on my sonic frontier transport 3 whe the iris opens you can see the disc spin quite easy to see that some of the cds are out of round. The center whole doesn't match the outside diameter off venter slightly. That being said if the servos don't have to work as hard it will sound better. That being said washing cds makes then sound better easy for any non believer easy to try. The funny thing about his comparison is the 5 cent cd player he is trying it on. And quite easy to try markers on the edge of the cd as well as the center that is easy to hear the difference as well. And yes I heard a demo of this machine with a levinson system in a high end store and yes there is a difference. Lol easy to hear when you listen on a quality system instead of a pos.
