I have been in Ventura for the last 15 years..... I got my Carver stuff in the early eighties when living in Northern Cal (Carver dealer was in Berkeley).
I am using the M400a to power the Amazings. It can power them to the point that the neighbors knock on my door, but I very rarely play them that loud in a 15 x 20 room. Typical everyday listening volume keeps the lights on the amp at the lowest level. Funny you should ask, after having the system for year or more, the Carver dealer brought to my house another amp to audition that he was sure I would like a lot better (it was either a 1.0t or a 1.5t, I forget which). I could immediately tell there was an audible difference - smoother, but less clear sounding. I liked the sound of the M400a better, and kept it. I read somewhere that when asked which amp he was the most proud of, Bob Carver mentioned the M400, although that possibly has mostly technical development or business reasons behind it.