I own a 1992 McCormack DNA 1 Deluxe (purchased used in 1998 for $1100 and upgraded twice by SMc Audio) that works well with low impedance speakers. It is on the warm side of the SS spectrum. Has never been "serviced" beyond upgrades to Gold then Platinum level. Not as cool sounding as Levinson, Krell, Ayre etc. More in line with Classe, Bryston, Belles. With the transformer upgrade, it will provide high current and not sound harsh when driven hard. Very reliable and reasonable cost for very high sound quality.