I have the Krell S550i, and I had the chance to also listened to the S300i. The S550i sounds much better while the S300i (in my years) is not that good (even being still a good integrated).
Sonus Faber Grand Piano Home Speakers with a Used Krell KAV-400xi or S550i Integrated Amp
I have a pair of these SF GP's (Home version) and have seen reviews making the case that the GP's match well with Krell amps, but they are not very specific as to which Krell amps. I am not in a position to go with a pre/power amp pair so I am looking at integrated amps. What say ye with respect to either of these older Krell integrated amps?