GNP Valkyrie

Hello,

Does anyone have information about these speakers?
Anyone with a reveiw from Stereophile issue X-3?

I would like to know when they were made.
And the differenes between the various versions that were mamufactured.

I believe there were several versions. But I don't know what the differences were. I think there at least three versions (the original, version II, and IV).

Any information would be appreciated.

thanks,

...kuroda