Component isolation


Let’s say you’re going to add isolation feet to a component with no moving parts, such as a preamp, phono stage, DAC, amp, tuner, etc. 

Which one is most critical to the extent would get your attention first? 
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Not sure I go along with your detective work. Radio frequencies, like light, are not affected by magnetic materials or by charged materials. Photons, which comprise radio frequencies, have no charge. So, crystals by themselves or “charged crystals” would not make them RFI/EMI attractors or absorbers.
Thank you Geoffkait for your informed observation,for sure you are certainly right...I will be more cautious in my explanations and think more in term of piezoelectricity...The effect is so audibly evident that I had looked for the beginning of an explanation...

geoffkait14,385 posts03-20-2019 6:54amNot sure I go along with your detective work. Radio frequencies, like light, are not affected by magnetic materials or by charged materials. Photons, which comprise radio frequencies, have no charge. So, crystals by themselves or “charged crystals” would not make them RFI/EMI attractors or absorbers.

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Jimmie,  this topic will drive me nuts   i only needed to read two   good luck