PAS was a funny company.
To be generous, let's call them a "second tier" manufacturer.

They made some really decent products, but they didn't have the marketing or dealer base.

They also made some absolute garbage.

Last I heard the Chinese bought them. Not sure where they are now.
They were bought by PHD Pro Audio in China. I think some patents were sold off to Radian, or at least some folks on the internet do. PHD appears to no longer using the PAS name.