Vibration - What are the Main Sources?

For isolation from EM fields Start with physical distance between components. Especially keep preamps and source devices well away from power amps and powerful amps from each other. Also from any nearby appliances with transformers as well if possible.
Low level phono amps are most sensitive. For example I placed my step up transformer in a mu metal foil tube to shield it from noise induced by nearby electrical devices.

Avoid running power wires parallel to each other and ICs if possible.
For physical isolation isolate speakers from floors if needed as in case of suspended plywood floors. If things in the room vibrate when you jump up and down speaker interaction with the floor is a likely issue.
Turntables are a whole other story when it comes to physical isolation.
If you address these things in most cases should be on very good shape. If gear rests on any solid foundation to start additional physical isolation will likely not add much if anything.

I've used inner tubes on heavy bass bins on concrete. It really effected the way the TT worked.. Radio stations by the freeway trick.

Over air the tube get craft foam blocks put them in the corners under the subs box. THEN let some air out until it just rest on the craft blocks.

I isolate, multi springs in holders and some type of soft silicone platforms. Adding weight works. Wrapping a quiet brick vs a noisy one help too. 

For "Rack mount" spring load between components, that works very nice. It adds load but not to much weight..

There are some VERY effective low cost solution to vibration control, how they do look vs how they should look is a different story.. 

There is some easy effective more expensive alternatives to.
Great looking, easy to install, easy to adjust and very effective is appealing.

Regards

MC provides good information as usual. But what is he talking about in the rest of his comments? Airing personal grievances, paranoia? It has nothing to do with the subject matter in this thread. 
Anybody else confused and tired of reading it throughout the forum?

I’m more and more getting the feeling that there is more than a little quid pro quo happening on this website, name brand advertising for benefits.

is this an admission of guilt? You can tell us, we’re all friends in here, aren’t we?

Maybe one of the haters is having second thoughts

Haters, haters, we see no haters. Much.

He uses isolation. https://systems.audiogon.com/systems/615 and cable lifters, what the? Shill?
If you're going to insult someone, because they may be haughty at times, it may not pay to dismiss truth.

I'm more and more getting the feeling that there is more than a little quid pro quo happening on this website, name brand advertising for benefits.

That, and some major rotator cuff strain from all the patting oneself on the back.