Isolating the listening chair?


Lately I have tried using audio isolation devices on the feet of my listening chair, first trying Tip Toes, then carbon fibre cones, suspension couplers and composite materials. I would have to say that the differences in sound quality exceed those in using the same devices on my tube amp, preamp, CD, or record player. I am now experimenting with different materials to put in the chair cushions, sand, closed cell foam, natural lambs wool, etc. The initial results are quite promising. Has anyone else had experience with this in the context of a high-end system?
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I agree with Zargon (and Bright Star, I think)that feeling the floor vibrations is kinda cool. But I question Brightstar's suggestion that cones (the original device mentioned in the thread,) are vibration isolation devices that would isolate the listener from the floor vibrations (I think that's what he's saying, but am not sure). Aren't they coupling devices that would transmit vibrations into the chair more effectively?
(To whatever extent this thread can be taken seriously).
Floors vibrating? Butts vibrating while sitting on vibrating floors caused by the neighbors below! Sounding like......they are LIKING IT!!! Where's THIS thread going?!? :-)
Seriously, our bodies feel sound as well as hear it, especially the low end. A little floor vibration adds a sense of immediacy and realism.

PS, no neighbors below, this is my system causing the vibration.
For ROYY re 6/20/06: I am very curious about the thread you referenced for breaking in speaker stands since I'm currently exploring the very same thing: A month ago I purchased the Yoyodyne flux capacitor that was made specifically for metal monitor stands. It induces a purified steady-state time-aligned fully-differentiated current to the entire metal portion of my speaker stands; the object being to properly align the metal molecules at the partical level so that sound waves don't scatter but, in essence, flow through the metal legs like a waterfall. I'll be honest with you guys: I don't think it was worth the $2,200 I paid for it because aside from a bit more "bloom" on some of the acoustic tracks of my direct-to-disk Quiet Riott LP's I haven't discerened that much difference. Oh wait ... maybe I haven't property broken in the stands? The manual said 10,000 hours....