I purchased a pair of Musical Fidelity 550Ks for half price after they were discontinued -- $2500.00 for the pair -- thinking it was an inexpensive (relatively speaking) way to get a pair of high-end, high-power monoblocks (I never bought into the "supercharger" thing and never used them that way). Big mistake. They have the most brittle, gritty high-end I've ever experienced in an amplifier, and they now sit in a corner of my listening room collecting dust. I don't even feel I can sell them, in good faith, for anything other than a P.A. or similar application. So there they sit.
