Do they work? Probably not as well as advertised. From an engineering concept and point of view a benefit can be had buy carefully controlling vibrations and draining them properly. First approximations by good intuition could yield good results. I think that my Sound Anchor stands under my Audio Note Ankuro's are better than the tip toes I they replaced. The thick Berber carpeting was better penetrated with the longer spikes supplied on the stands and made they made better coupling to the concrete slab floor. The stands cost were a huge $ investment over the tip toes way beyond any true cost benefit, but I am very happy. I did it when it was a detail I could afford. I never invested in partial answers between the tip toes and the Sound Anchors because I had an idea where I wanted to get to in the end. More cost effective elements can be found in stone yards, scrap yards, junk stores. The benefits of better air flow of raising the amps nine inches above the floor is clearly a tube life win. It also looks cooler. Go with your intuition, I do and it will be generally correct to a point. Good luck.