I find the Hegel H80 to have a recessed sounding midrange that seems to be an artifact of the Hegel's DAC. The Hegel does a nice job with lots of apparent detail, but it isn't the most accurate amp I've heard. So what's wrong with the Hegel sound (in addition to the apparent "back of the auditorium perspective on voices?" Well, there's the bass... To say that the Hegel makes my system sound like a boom-box would be an overstatement, but not too much of one... The bass is extended, but also overly emphasized. Some (most?) apparently like the effect, but I don't.
The other thing that the Hegel does that I don't like is to emphasize lower treble detail. The treble isn't bright, per se, but it has more of an edge to it than do more neutral amps. Although initially appealing (Wow! Listen to all that detail!), it is ultimately less accurate, bordering on irritating.
I can see why audio show presenters like to use the Hegel amps to demo their speakers. Like the TV store where all the screens are calibrated for excess brightness and far too much contrast (for a picture that "pops" as compared to the competition), the Hegel amp presents a sound that similarly "pops." But only for a short time... Just as your TV picture improves significantly when you calibrate the black levels and reduce the contrast from factory settings, the Hegel would improve similarly if you could flatten the perceived frequency response and reduce its "contrast." But unlike a television, you can't alter the Hegel's sound once you get it home.
Don't get me wrong - I can see how many folks would prefer the Hegel's sound, especially if their speakers were somewhat bass-shy and forward in the vocal ranges. The "Hegel sound" isn't completely unpleasant, but it isn't completely neutral, either.
It speaks volumes that so many reviewers find the Hegel amplifiers to be "high-end." Yes, the Hegel is better than some other integrated amplifiers and receivers that I've ever heard, but when compared to even modest separate components, much less exceptional ones, the Hegel just doesn't measure up. Of course, in the "high end world," the list price of the Hegel is peanuts, so perhaps the reviewers are actually meaning to say "it's good for the price?" I'd disagree with that assessment, too, but that's a discussion for another day.
The more accurate the rest of your system, the less I think that the Hegel will satisfy. That said, I think that the H80's integrated amplifier is a far better product than the H80's internal DAC. Even so, I expected better for the money, and especially after reading all the "rave" reviews.
So am I keeping my Hegel? Yes, I am. Why? Because it makes a good alternative for some speakers, because it is light and compact, and because sometimes i want a different "flavor" for my listening. The Hegel provides those things, and, having bought mine used, it is pretty fully depreciated already. But I can predict now that the majority of my listening will continue to be done with more accurate components.
Boomzilla (moniker NOT indicative of listening preferences)