Interesting thread--I am considering using Ultra SS with the Ultra Bases as footers for my new speakers (which are now being built). I have not had the opportunity to try any Stillpoints till now so would be interested in feedback when used in this application. I looked at a variety of options (trying to find a less costly alternative) but am persuaded, for a variety of reasons, that the Stillpoints may be the best way to "float" the speakers in my room (suspended wood floor above basement level). One thing I took into consideration was the fact that two very respected designers of high end gear (David Berning amplification and Artisan Fidelity turntables) apply them as standard on every product.