I don't own either Mac or Krell, but I've heard nearly everything both make, at length, on equipment I'm familiar with. Now, to be honest, from the very first Krell product to the latest, I have considered that company's sound to be an appalling step backwards that undermines the credibility of "high-end" audio as an idea itself. Really, Krell's acceptance and longevity in the market is positive proof to me that high-end audio criteria are essentially divorced from any notion of music fidelity in reproduction. I haven't heard Krell get anything right, so far.
Now, McIntosh has had its slumps, but not lately. If you opt for MC501 or 1201 monoblocks, or a 402 or 602 stereo amp, I am certain you will be recognize that move as an unconditional upgrade over Krell. Of course you have many other options too. But a pair of MC501s can make you "done" for quite a long time, if music is your chief concern.
Phil
Now, McIntosh has had its slumps, but not lately. If you opt for MC501 or 1201 monoblocks, or a 402 or 602 stereo amp, I am certain you will be recognize that move as an unconditional upgrade over Krell. Of course you have many other options too. But a pair of MC501s can make you "done" for quite a long time, if music is your chief concern.
Phil