I consider any functioning Krell power amplifier to be very faithful to music reproduction. Tube amps can be very nice too (I own one, and am buying another). Perhaps you just haven't heard a Krell component set up properly. I wouldn't go by what I heard from one in a dealer's showroom anywhere in the world (or especially an electronics show), which is mostly what is going on here IMO. You can't just use ANY cabling, and think you're going to get satisfactory results, that's for sure. You also can't listen to any system (tube or ss) in any room which is not properly acoustically treated, and then blame one of the components as the cause of "problems" you might be hearing, IMO. If you heard my (admittedly not top-of-the-line) Krell amp in my system/room, you might just want to buy the company...that's how good it is. Come and give it a listen sometime, if you're open minded. I am confident.
Why Is Krell Not Considered Hifi?
No one seems to think that Krell sounds hifi, but just hifi price. They say it sounds hifi in that context that it doesn't sound real. I have to admit their products do have a metallic like cast to their tone, but aside from that I think that they are very smooth and detailed, far from the best in detail, like a CJ Premier preamp but they do make decent stuff. And just from looking at their products it makes you believe they sound as they look. Obviously its not true, but Krell makes decent stuff that has a good rep and is easy to resell (as long as its a current model, which is hard cuz they have so many new models) but its no way the sound of a Rotel or NAD that many people say.