Is There any Truly "High End" Integrated Amp?



I'm a reasonably well experienced audio nut and have tried a number of "good" integrated amps. I wonder, though, if there are integrated amps that are good enough for the "best", most revealing speakers. (Think Avalon Eidolon, Verity Parsifal, various JM Lab Utopias, and a variety of other fine speakers that do not have mammoth power requirements.)

People talk about the Levinson, the Musical Fidelity KW-500 and the lesser MF amps, the BAT integrated, The Rowland Concerto, etc. etc. etc.

I would like to hear from people who have actually tried the top tier of integrated amps and would be very interested in learning of their findings.

Don't need to be the most expensive. Could be the YBA Passion, Classe, MacIntosh 6900, Krell 400i, or any of a number of integrated amps that are supposed to sound good.

Hope to hear some good feedback.

Thanks very much.
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Btw - at CES, I also saw an integrated from Vitus Audio (from Denmark) that is going to retail for $12K in the US. Haven't heard it, but I'd guess this would fall into the "Truly High End" integrated amps if its performance warrants the price...
The most musically satisfying and certainly "high end" integrated amplifier I have heard is the Jadis Orchestra Reference. A great amp with one irritating issue - biasing is a huge pain - otherwise it is perfect, at least driving my speakers, Merlin TSM-MXs.