Townshend Pods under TT Don’t Do

Let me add that US wood-framed homes are amplifiers of vibrations and hopeless for turntables, and the basement floor is the only place worth a damn. Second to that is slab or first floor suspended floors with reinforcement piers sitting on basement concrete.

An old technique for suspended floors is to install a jack directly under the location of the turntable, applying just enough pressure to stabilize the floor. That assumes the area under the floor is just a crawl space, not a basement. In the case of a basement, install a brace running from the floor of the basement up to the listening room floor, where the jack may be installed.

@bdp24 

That would do it. That sounds like an 1900’s solution. Going directly at the problem.

Could be my sample size, but I don't see many wall mounted TTs in the virtual system section.  For me I find wall mounting just a little too permanent.  About once a year I rearrange equipment just for the sake of it.  A wall mounted TT would really limit my options.

Where are all the deleterious footfalls coming from when you play music?  Again, going back to the virtual systems, not too many of us look like they have a dance floor in the listening room.

A wall mount is a good option for those who want to go that route, and have a table that's not too massive nor large in footprint. I like pushing the rack against the wall because it's so easy to do, and leverages the strength & stability of being pinched between both wall and floor - the table is no longer cantilevered out into space. Limited displacement means much less chance to excite resonances in the system. Very effective. 

Where are all the deleterious footfalls coming from when you play music?  Again, going back to the virtual systems, not too many of us look like they have a dance floor in the listening room.

As @noromance mentions, typical residential home construction in the USA is awful. Some of the setups I've attempted were so bad that a person walking 2-3 rooms away could cause a skip. Besides basements (which usually have very low ceilings to contend with), converting a garage is your only other "stable floor" option in most homes here. 

It doesn't always require footsteps, either. Particularly suboptimal setups can excite resonances just from energy coming from the speakers when played back loud.