I think the best isolation from airborne vibration is to pour concrete over the amplifier. This can, however, create some maintenance issues.
I am currently experimenting with an airborne isolation system involving helium-filled balloons tied to each of the 4 corners of the amplifier. At the moment, I'm having a problem with the cat, who likes to ride on it (because it's warm), and has figured out that by manipulating the balloons, she can guide it around the living room. Guests find this disconcerting. I guess I will have to try shorter interconnects.
I am currently experimenting with an airborne isolation system involving helium-filled balloons tied to each of the 4 corners of the amplifier. At the moment, I'm having a problem with the cat, who likes to ride on it (because it's warm), and has figured out that by manipulating the balloons, she can guide it around the living room. Guests find this disconcerting. I guess I will have to try shorter interconnects.