Stillpoints - snake oil?

Of course they are snake oil.  Transistors and ICs are not microphonic, and the laser in a CD player is servo-controlled to read accurately (not to mention that the encoding of the data stream on a CD includes error correction). There is some logic to installing vibration isolation on your turntable. And vacuum tubes are microphonic, but rubber isolated tube sockets and not putting your amplifiers in front of the speakers is probably 99% effective for reducing any effects. Save your money and upgrade your speakers, or invest in room correction instead. I wouldn’t have anything to do with a dealer who was pushing this nonsense. 

d2girls "because learned med have told us so. *snickers* "
men are bad - chocolate is good. (snickers bar) 

For @ebm  @twoleftears @phomchick ...

According to many reputable people, not dealers, in various forums, the Stillpoints are different than the other options. Perhaps Ansuz Darkz are similar technology, but they are even more expensive. Even two guys I know locally that have been doing this for years, they had tried all kind of things with no results, until they installed the Stillpoints.

So I decided to give them a shot. I have learned over the years that the best thing to do when in doubt, is to try something. Everything else is just opinions, often without any actual experience. Yes, based on description, and application, in theory these sound very suspicious, as my OP said, but I will soon learn myself.

Only one way to know