Paul, all equipment vibrates when music is playing loud, they all have a natural resense frequency and threshold, even on solid marble or squash balls or wood you can still feel the them, some stands counter act these freq's or absorb/disapate them, weather you like the sound they make, thats another matter. My equipemnt doesn't shake or physicaly jolt along the stand, I must need some serious power to move a 32KG tranpsort and 15KG dac.What I feel Mike was trying to point out, was that by placing his hand across the top of the transport, he could not feel, the internal vibrations of the sound waves acting on the kit. Using is a glass shelf is far from ideal, but required for a/v due to the size of the components.

The sink will work any where, floor, table bookshelf, so will mana I'm told

No Foo Foo dust there, just for futher adventuement, have you tried a spot of internal damping on your already set up equipment ? would be nice for you to try and report back I feel.WM