Actually stehno you are quite wrong about the ability remove airborne vibrations. I have had some discussion with a gentleman who custom builds stands designed to eliminate the specific frequency at which a piece of gear is prone to vibrate, but also has worked out a method of eliminating the airborne frequencies. As I am at work at the moment I cannot provide the specific details but he was at the last Chicago Audio Society meeting and Jolida, Great Northern, and many other companies have used his platforms and are very happy with the results.
The impression I got from the original post was that he wanted to improve the sound quality of his system. If that is indeed his goal, I think the advice supplied would have been helpful.
I may not be as perceptive as stehno and could still be wrong in my attempt to help. If this is the case I apologize for my attempt.