SRA Isolation Platform under a Turntable

How expensive is a SRA or a Critical Mass platform and is it worth it (sonically not in $ terms) in a specialist audio rack? Have one of those incredibly heavy all acrylic/ stainless steel racks that are OEM for the MBL range from Germany.
Cheers

I can't say how much improvement it would offer in your case because I'm not familiar with your rack. In general though, I would say these platforms offer much more complete isoloation and vibration drainage than even a very good rack. Good isolation is not something that will blow you away with the changes you notice. It allows your table to do it's job more effectively without interference from vibration which I think evens out the tonal balance. If you find it jaw dropping or exciting beware-it's probably adding something to the picture that shouldn't be there.

With my rig the tonal balance did not need to be evened out, because it was there from the start. What the SRAs did was to open up the soundstage, give a tad more speed to dynamics, added slightly more air around instruments and rendered the entire musical presentation more natural and more "quiet".
To my ears, to answer Sunnyboy's question, adding them to my system was worth every penny.

Any idea what the SRA costs ?
Cheers

Detlof,
More natural and more quiet. That's what I'm talking about. You may have had good tonal balance from the start but it sounds to me like the SRA improved it further.