[/SIZE] The Townshend Seismic Isolation products purport to do the same thing. They have one product that can work with existing racks. http://www.townshendaudio.com/hi-fi...-isolation/seismic-isolation-support-corners/. I got the Seismic Pods which are a bit cheaper for my subs and speakers to good effect. I use the older version of Solid Tech Feet of Silence for DAVE/BLU2 with rubber O-rings rather than the newer ones with metal springs but I think the principle is the same; 3 dimensional freedom of movement.