I attempted to ask Ried this question in an earlier post. It seems to me that a major difference between the lab equipment for which the Herzan was designed and something like a turntable or a CD player is movement from the object being isolated and thus internal vibrations and weight shifting. He did not address this question in his response.
That's kinda sorta what I stated in my above post. This platform was never designed for turntables or other objects that have moving mass during their use. They were designed to sit underneath objects that just had stationary mass and needed to be absolutely level like electron scanning microscopes for instance. Apparently it works just dandy for turntables according to Mike and Christian.