Driving a pair of Focal 1007Bes with a Rega Maia rated at 80W the speakers emmited a loud clicking rattle when I cranked them up too far, with the same amp into Thiel CS1.6s a sustained forte passage in Rattle and the Berlin Phil made the sound seem to sparkle and jump out at me from the sound stage, presumable when the power supply ran out of current (the Thiels were 3Ohn at areound 5KHz), A Naim 250, also 80W had no trouble with the same passage at even higher levels on the Thiels but it had a much stiffer power supply. The quoted power isn't the whole story.
