that transformer was developed about 2 years ago after about 4 months of consulting back and forth with a company in HongKong that I did while developing new product options for the PAS3. I received 2 samples before commiting to a minimum order of $2000. It worked for about 3 hours, then burned out. Never did buy anymore, and the price turned out to be higher than it's value. If anyone else has experience with this transformer from HongKong I'd love to hear about it, but it's still a little pricey compared to alternatives.
I now sell a stacked pair of toroids ($50) for the PAS3-Z modification, (it's the solution only if you are working within the tiny confinds of a PAS3 or PAT4 chassis. Otherwise you are better off with something else.
See this page for a variety of PAS3 options . . . . .