I have used cones and spikes of many types (not those from Star Sound), sorbothane feet, vintage Audio Technica footers, wood blocks, brass footers and probably a few others, and never could I say that any of these gave my system better sound across the board like the springs do. I obviously have not tried everything (not even close), but the cost/benefit ratio of these springs is ridiculous. Just my experience. No horse in this race and no disrespect intended to anyone.Dave, I believe you. What sorts of amps? I have noticed the best effects under tube amps. Starsound stands have a much more profound impact than their cones. That being said, the more things vibrate, the more pronounced the results of any of these technologies (room>subs>speakers>TT>CDP>tubed gear>SS and digital gear).
One of my motivations for this thread was a theoretical basis for the effect on electronics and why. There is little to no data to be found. Just lots of woo woo and strong pseudo-scientific opinions. That does not mean the answer cannot be found or that their application is not valid.....