How do iso. cones work and what are the benefits?


I know this is kind of a newbie question, but what exactly is the idea behind using brass isolation cones under a cdp? I went to try to explain the purchase to the wife, and then realized I didn't exactly know myself! They seem to be very popular, but I am unclear on exactly how they work or what the benefits are.
Is the idea to "drain" any internal vibration from the cdp?
Are they equally as effective under other components such as and amp or pre?
Also, I would appreciate any advice on their use, any tips, placement, etc. Thanks, Jb3
jb3
Walker Audio {www.walkeraudio.com} and Mapleshade {www.mapleshaderecords.com} discuss the benefits and installation suggestions.Happy tweeking.
Easier than readin all that. Have her contact me and I'll have my wife write her back. She couldn't believe it (and neither could I) when I put the BD Racing cones under the cd player the very first time. I still don't "get it" and think it's voodoo BUT we did notice another large difference once I put the large DH cones under he pre-amp.