It’s really amazing that a designer of that caliber would contribute so much to the DIY community. Pass’ love and passion is what drives him and that’s why Pass Labs have been producing such fine audio equipment and have one of, if not the best, customer service in the industry.
But this is a thread where a question was raised about vintage Threshold vs. modern Pass Labs XA30.8.
Comparing Pass kits built by a DIYer to commercially produced amplifiers from other manufacturers is misleading and irrelevant to this discussion. It also won’t help the OP or anyone reading this thread now or in the future.