vibration control

Yes SYMPOSIUM Ultra,Rollerblocks etc the BEST by far..

TMC air isolation platforms under all. Tube line stage,Tube CD player, DVD player, SS Phono, Basis TT, and both A/C regenerators.

If you don't want to drill too deep, a good place to start is by making sure you have solid, non-ringing support for your gear, and then trying Herbies products (start with the simple isolation feet );
http://herbiesaudiolab.net/

i don't get it with all these "vibration control" devices: is the idea that they prevent the vibrations from shaking up the electrons, which would (presumably) affect the sound? the idea of it all just sounds ridiculous to me. but many of these "tweaks" sound ridiculous to me. the only component in which i can see a legitimate need for vibration control is a turntable.

Paperw8,
I think that what is ridiculous is making the comments you make without having tried any of these devices. It isn't always possible to explain why something works, but that doesn't mean that it doesn't work. That isn't to say that there isn't good science behind some of these devices.
Anyway, why don't you give it a try? You may have a pleasant surprise.