Cable isolators ???

I was doubtful about vibration having an effect on electronics, much less wires. Rather than argue about it, I put a high gain circuit (phono preamp) into a box along with a small speaker system and a SPL meter. Ran the SPL up to about 110dB, and looked for any change of the preamp output. Nothing.

I think that vibration isolation is for turntables, where the pickup is expressly designed to respond to tiny vibrations. Elsewhere in the system, do it if it makes you feel good.

The foam is a good bet. All that ceramic stuff gets you no better results.

Very interesting advice. Thanks. I guess I was under the assumption that because cable isolators were ceramic, that the problem was due to static electricity (hum) more than vibration. Great ideas. Thanks.

The dielectric characteristics of foam are much more invasive than ceramic. I have used teepees and ceramic in previous systems, and I like the ceramic better.

Carpet is a dielectric that DOES effect the ability of cable to transfer signal.

I use cable isolators on both of my systems. They are used only to keep speaker cables and power cords off the carpet and route cables away from each other. Although they do not produce a dramatic improvement in sound, they do tend to slightly deepen and tighten bass and lower the noise floor. I would rather have them in my systems than do without. I would gladly purchase them again...