Hello Perkri,
What is it with spring companies and their love for the cheap ultra low-end spike?
I saw the same demo a few years back and could not believe their unethical approach to a sound demonstration.
Think about it, a “multi-hundred dollar” set of springs tested and compared next to an “eight-dollar” set of spikes. The fix is in before note one is sounded!
I hope your opinion favoring isolation theorems and springs is not based on this degrading type of display.
Robert
Sound engineer for Star Sound