I own the Belles SA-30, for a few months now, and I don't see many user reviews of this sister-model to the SA-100 either, although a few magazines have reviewed it very favorably. It truly is a phenomenally good poweramp, and one I don't see taking second seat to most any poweramp, price disregarded, with the only limiting aspect (on paper) being the stated (pure Class A) 30 watt output power. However, and take my word on this: there's absolutely no indication there's only 30 watts under the hood on the SA-30; it simply sounds unrestricted and wonderfully natural. I guess it goes to show how far 30 good watts can bring you, although with todays most inefficient speakers some might want for more power. In light of all this it may not be a cheap poweramp, but it's a relative bargain nonetheless.
Needless to say I'm also confounded by the lack of awareness on these Statement Series poweramps. Perhaps a parallel can be drawn to politics here: the more money spent on marketing/campaigning...