What is vibration isolation for?

Best tweak I have ever experienced was of all things... isolating my cd player with an Ariel Osiris stand. I really didn't expect much, but got it at a very good price, so I thought I might as well try it. My system came to life in a way that everyone noticed. Could be there were more intrusive vibrations in my system than in some other situations, but I'm very happy with it now, and that says a lot.

First they put springs under a turntable and claim success. Next they'll be putting springs under automobile suspensions, claiming it makes the ride smoother.

What next?

Anybody here tried one of them new fangled "Levitator" isolation doohickies from www.GR-Research.com/levitator.htm?

Acrylic plate floating in air based on repelling magnets...

Looks really cool but does it work????

I will be more specific - I can understand the use of isolation with mechanical things like turntables(of course), cd players, and speakers, - but people are doing this to amplifiers and pre-amps. I understand the concept of microphonics and that sort of thing, but my point is wouldn't most of the vibrations be coming via the chassis of the component itself - not the table it is standing on?

Insofar as solid state electronic components, the whole vibration thing is bogus to start with. Tubes may be microphonic and a damping ring around them can't hurt, but solid state circuitry is for all practical applications relating to reproducing music in the home not helped by vibration reducing gizmos. You are right in assuming that the music itself will cause airborne vibration to act directly on the chassis. But, hey, that does not stop real believers in spending a bundle to reduce vibration and claiming they can hear positive effects. Geez, folks in these threads keep asserting all the time that they can hear HUGE differences for passive components. Once you start making claims that everything has an effect on the quality of the sound you hear from your system, the slope is so slippery that you can very easily believe that mass loading or isolating with some form of compliant suspension will act on the circuitry. The tweakers will possibly come down hard when hearing this: amp stands et al are a crock. Good listening and don't let the buzzards bother you.