I just got my first Stern pin, a GZ, and I can’t believe how loud the fan is! My MMR makes literally no perceptible noise whatsoever, so this came as an unpleasant surprise. At least I know I’m not the only one, and there’s a fix. Very annoying though. Shame on them for not sourcing a better PS. For the price of a NIB Stern pin, this sort of thing is BS. I’d rather pay a bit more if the margins are really that thin.