My dealer has had a few units in and I got to hear what I'm pretty sure was a 300. It was mated with a Classe pre and McIntosh monos into some Martin Logans. I remember being impresseed with the level of resolution despite feeling certain passages seemed "etched".
The best reviews of Krell products always happen in complete Krell set-ups. I have not been priveledged enough to hear this firsthand, but it seems to be the general consensus so maybe you're on the right track. Your speakers should let you know right away.