I'm sure this will work for some, but I prefer to cut my old golf grips into chunks/strips and use them as vibration control/isolation material. Effectively free because if I didn't use them this way would be throwing them out.
Walmart, 97 cents, for Vibration Control
Simply place on components, or wrap around cables and plugs. As with footers, location counts. The more resolving systems will benefit. The "Fuzzy Sticks" resemble pipe cleaners, but they are lighter, thinner and less rigid. This means they can be folded, bent in spirals, and cut with a scissors.
Prepare to be astonished. What music lover doesn't have micro-vibrations they would prefer to eliminate?