Spenceroo, I don't think my WP7's are too lean with Essence amps and CAT Ultimate preamp, although I don't think they will ever be confused with a rich, warm sound. I was surprised at how transparent and big-sounding they are. If you want more warmth I would go with tubes, although you will give up some of the cavernous bass they are famous for. I haven't heard Pass electronics but one of my Essence amps is biased heavily into Class A and they do produce a warmer, fuller, more 3-dimensional sound than my other Essence amp that runs more in Class AB. If you are looking for a huge soundstage, the WP7's have the best I have heard. Audiooracle, notwithstanding how your Taiwanese (Taiwan is off the coast of China, no?) speakers sound, what irritates me most is your rudely forcing yourself into threads and trying to make a buck. The original poster was asking how WP7's would sound with Pass amps. I don't think he nor anyone else was asking for a put-down of Wilson speakers, who are an easy target because of their prime market position, something Usher never will have. Obviously this is too high a concept for you to understand. BTW, ever notice how many speakers have copied the WP design? You are trying to horn in on a market advanced by Wilson and other top high-end companies whose innovations built the business.