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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My townsend seismic sink is a superb anti-vibration device for my VPI TNT VI.  For all my other equipment, I am using Stillpoints of various sizes based on how I perceive the benefit (Ultra minis are often better than larger units depending on the equipment).  I have 11 sets of Stillpoints.  Otherwise, I would have chosen the latest versions of Townsend seismic products which are more expensive and non-hydraulic (air bladder) any longer.
To get the best results with roller bearing isolators its best to use injunction with a spring of some kind. This may be an air, magnetic or mechanical spring.
Another t-shirt reads "Just because you explained it doesn't mean you have a clue"
Yet another t shirt reads, “If I could explain it to the average Joe they wouldn’t have given me the Nobel prize.” 
Nobody talks about the fact that component isolation can lead to component loneliness. Sad.