I had the Usher AC 10 for awhile. They were very good speakers, but the BE 10 I'm told are a bit more flexible, in that they mate more readily with tubes, or solid state. I have the Lamm ML 1.1, and I can tell you it is an outstanding amplifier. Very natural sounding, broad soundstage, with great mid range magic. I'm sure they would be a very good match for you if you're looking for tubes. The ML 1.1 amp is discontinued, but if you're patient you may find a pair here on the 'Gon at a reasonable price.
