Does anyone have experience with the Nagra HD mono blocks? To me they seem mismatched in price with the HD preamp and HD Dac. I don't mean it is cheap by any means (!) but it seems that most players with preamps in the price range of the Nagra preamp ($65k) seem to have mono blocks of a much higher price e.g CH Precision, Dartzeel, Vitus, Goldmund, Gryphon, Constellation to but name a few. I could be interested in the Nagra HD preamp but do the HD amps ($65k) do it justice or is there something bigger coming along?