Anybody tried the PS Audio Gain Cell power supply?

As above with any equipment PS or other wise.Wonder if you are using one of other prdoucts and (pre's,integrateds,) and etc if it is worth redundancy or should someone look else where in same price range for another model?Also wonder if they will be incorporated somehow into the PS 300,P500,1200 AC regenerators in future.Also when will somebody slice a Gain Cell open and let us know what the hell it is.
Thanks
Chazzbo