Sounds like the int 250 has some detractors (heat, styling, etc.). For me the Luxman 509x is still very much in the running. Same with Accuphase. But, almost without exception, the reviews of the Pass Labs int 250 are very highly and consistently positive. Styling and heat are the only negative comments I've read. Our music room, being downstairs, is always cool. So that's not a factor in my decision and I happen to like the art deco-ish styling.
But I would really like to hear how it stacks up with integrated amps in a similar price range. Other amps I'm considering include...NAIM Supernait 3 (due out this month), Simaudio/Moon 700i v2, Simaudio/Moon 340ix, Hegel H590, Audio Research VSi75, and Rogue Audio. I've even thought about the McIntosh MA 9000 but heard it doesn't pair well with Harbeth.
Anyway, it's fun to research it but it's overwhelming at the same time. Just when I've settled on a first choice for my new amp I read about something else that fits what I'm looking for almost exactly. But, at this very moment, the int 250 really has my attention.
I do agree with a poster on the Audiogon forum that heat, over a period of time, can take it's toll on electronic components. And it sounds like the int 250 does put out some heat. However, a lot of amps put out considerable heat (some more than others) and I just don't read much about heat damage to electrical components in audio amps unless they're heavily used for decades. I'm sure that there is some but evidently it's not a big factor.
Anyway, I'd like to hear more about the int 250. I'd especially be interested in any comparison of the Pass Labs int 250 and the Hegel H590. Don't forget, I have Harbeth speakers. Thanks guys. Keep the discussion going. I really appreciate the info.