Isolation devices and CDPs


Do isolation devices really work under CDPs (I own an EAR Acute)? If so, which isolation devices work best? And how/why do they work?
gsm18439
I think the EAR Acute in particular benefits greatly from 2 things. 1. Tube rolling, I found the Amperex US 7308 very good and the Seimens early CCa excellent when compared to tubes provided. Several others I tried did not beat the stock tubes. 2. Vibration isolation and mass loading.
Overall I feel the Acute really sounds excellent with these 2 tweaks. My only criticism is it could have been built a little better but then the price probably would have been a lot higher.
A Gingko Cloud and VPI brick over the transport. I was thinking about a total resonance control package from GNSC but it would have voided the warranty.
Owning four Vibraplanes, I can testify that when properly set up, these babies really do the job. Have had these under my amps and sources for a decade and they work wonders. Use brass footers or cones between 'plane and equipment, although Golden Sound's feet supposedly are wonderful, too. The footer interface is up to you based on sonic preference. But as a platform, the Vibraplane is great for sucking up those unwanted vibrations from multiple sources. Remember: the 'plane eliminates both horizontal and vertical vibrational energy.
I wonder what is more important for the cdp, isolation of damping or both? I noticed that most devices are mainly focused on one or the other.