Please share your experience(s) with Audio by Van Alstine. I'm considering one of his preamps to pair with my A-S1100, which I might eventually replace with one of his hybrid amps. My main concern is whether he is easy to deal with post-sale, and whether he honors his satisfaction guarantee without any strife, unlike Odyssey. Also, does his gear have a "house sound," or is it all over the map? Thanks!