tweak, do they realy bring improvement?

Barry, I'm sure we agree more than one might be led to believe. The point I tried to make is that as long as the vibrations are absorbed or dissipated it doesn't really matter from what source it has originated.

Hospitals, labs, and others seek to neutralize ground borne and air borne vibrations, just like you and me.

BTW I do have a set of your products in my system, and I am very happy with them.

Hi Nrchy,

Please do not get the impression that I am trying to argue with you - I am not. My comments are directed more towards all of the readers of this thread, not only the people that post. Some may not be aware that a platform that only is designed to address floor-borne vibration for lab, hospital or observatory equipment does not specifically address the other sources of vibration that affect audio/video equipment and would therefore not provide comprehensive vibration control.

I also thank you very much for your purchase of my products. I am pleased that you are enjoying them.

Best,

Barry

I've been reminded to thank my parents for sacrificing to keep me out of government schools, thereby affording me the opportunity to be introduced to such wonders as Hans Christian Andersen's "The EMPERORS New Clothes", and the proper spelling of placebo.

You can't use the word christian here, even as a name since this is a religion free zone. Note the spelling errors. My parrents were poor!

Some do , some don't.