I met ali last week to get my speaker stands repaired. It was pending from my side since more then a year
I also had a look at the new roller blocks and opted to try them
Have them under my cd player and it has brought quiet significant improvements.
Improvement in macro and micro details, slightly more deeper stage
Most important is that music never sounds harsh which it used to sometimes at a specific volume
And feels like there is reduction in noise floor
These all are very subtle changes
When one is used to the sound of his setup , it becomes quiet easy to detect changes in sound once the roller blocks are used under source