How good are McIntosh MC7300 and C40?

Hi, I have recently inherited my father's McIntosh system, which includes:

MC7300 power amp
C40 preamp
MCD7008 CD player
MR7083 tuner

I was just wondering how good these components were. I've been listening to this system with Xavian XN185 speakers and Revel M20 speakers for about a decade and i love the sound. Are these as good as the top of the line Krell, Linn, Mark Levinson, etc? Where do these components stand?

Thanks in advance,

Seong