I'll second Elgordo's comment on the Hafler 9505. I've used one for 7 years or so with Maggie 1.5's, 1.6's and now 3.6's. Outstanding sound IMHO and excellent durability. 250wpc @8 ohms, 375wpc @4 ohms. Rave review in S'hile in '92, including Sam Tellig, and many other publications. Now sold mainly for professional use and used in many a recording studio, since Hafler has exited the consumer market. This amp deserves more recognition.