I use them under everything I own, and have gotten excellent results. A very good improvement and the technology is proven. It works and you can hear it. They have been evaluated by industrial vibration control standards and are an accepted method of handling unwanted vibration. Instead of de-coupling and isolating, they give a rapid evacuation of the vibrations to mechanical earth ground. I found them to be clearly better than rubber isolation or other soft-type isolators in my system. I think that they were worth the money for me.
