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.
