New Krell s550i Impressions?

Looking for information on this new Integrated. Performance, quality, concerns? Thank you in advance.
I had one for about an hour and the power supply went, Bought a Mac6700 instead MADE in USA not China
I am considering one of these, but would be using it to run a pair of 4-ohm KEF three-2's. Anyone have an opinion as to whether this would be too much power for these speakers? I don't play music at concert levels, but my system is in a very large room.