I don't remember Danny ever talking about them directly.
But looking at the drivers, the appears to have the same tweeter as the older AV123 products, like the X-LS Classic, or the current A/V products.
Considering it's new "old-stock" much like the CST1s that sold out, I imagine there isn't any norez. It's more than likely the dense paper that was found in the CST1s. I could be wrong tho.
That said, I imagine they still sound fantastic, considering their original MSRP.