I'm quite pleased with my Pass gear. I have no calling on driving a .9 ohm load and I suspect neither do most folks. Mosfet mist? a term i've not heard in eons, yet in any event, I don't have any mosfet mist-
However, Pass certainly isn't for everyone and all I can say Pass amps are among the better amps around (and not mid-fi as has been recently suggested by a frequent youtube creator).