SRA Isolation Platform under a Turntable

The SRA bases under any audio component will make a clear difference and audible improvement as described above.

I think it would definitely be an improvement. VPI tables especially benefit from good isolation. I looked into SRA when I wanted more inert isolation for my Super Scoutmaster with rim drive but the line of communication broke down and I ended up going with a platform from Critical Mass Systems(the Master). I'm sure the results are quite simialar to what you'd get with the SRA. Compared to bare maple the CM base allows detail to come through but without the tendency for occasional edginess. Compared to a Gingko base(which is also very good) I notice less bloat in lower frequecies. In short, the whole presentation seems more tonally balanced with higher listening levels being less fatiguing which I always take as a good sign I'm on the right track. The SRA product seems like a good one. I think I hit them at a bad time and they just weren't answering my e-mails. I also can unconditionally reccomend Critical Mass. Joe is one of the good guys in audio and he'll make sure you're satisfied.

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.