I realize that these are not cheap, but to make a point on driving Wilson speakers. I have heard the Maxx's driven by Art Audio PX25 amps delivering 6 watts per and they sounded
fantastic. When I was listening I didn't realize that the Art Audio amps were even on. I thought that one of the other amps were driving these big speakers. So my point is, Wilson speakers are extremely efficient and for something as large as the Maxx's to drive effortlessly and deliver the bass in the tight deep precise delivery they are known for with 6 watts. I would say look for a lower powered amp and focus on sound rather than power. You have the right speaker for any amp, in my opinion.