I am not the best source for information on heavy, high-powered amps, but based on my experience you might want to look into Sim Audio for more warmth. McCormack isn't bad either. But there are many others here who know much more on this subject.
For myself, I simply cannot abide the huge torroidal power supplies, the heavy aluminum casing and completely unaesthetic, wife-unfriendly footprint of most Krell amps. They just dont cut it in the average living room, for instance. But also, and more to the point, I personally don't think those I have heard sound as good as my Linn amps, which use a switch mode power supply (thus are in comparision light and small), are stable into any speaker load, and are pleasing to any eye. Unless you are going for the Klimax solos (10K each), Linn amps are lower powered than the big Krells. Mid level Linn amps like the 2250 or the 5125 (multi channel) are around 230 watts into 4 ohms. Still, if you have a Linn dealer where you live, they most certainly should be auditioned. They are also a great value used, if you would consider buying that way.
