I agree fully with earlmarc's review referenced above, and can attest to the pure musicality of the Belles 350A Reference. For 6 months I had been searching for a pure two-channel SS amp (to replace a Sunfire Cinema Grand ~five) driving ML Summits. My current setup precludes a tube amp, or a HOT running Class A design. I auditioned a number of alternatives, with no luck. Fortunately, Shane (hometheaterdoc.com) suggested the Belles 350A Reference. After reading (admittedly sparse) reviews and forum comments, I took the plunge and ordered one. All I can say is WOW! I've never heard such a musical amp, with such textural detail, in my system. The synergy between my Modwright Pre, Belles, and Summits are pure heaven... deeper tighter bass, with crystalline midrange and highs, and an incredibly deep soundstage. Thus far, with a few hours of listening, it runs warm, but not hot. The latest version includes the soft-start circuit, and I've had no issues whatsoever with startup.
Mind you, the Sunfire is a great design (certainly deserving more high-end respect than it gets), and it's a favorite of ML owners because it doubles-down it's output into low impedance electrostats. But, there is definitely something special about Belles MOSFET output design (as opposed to the Sunfire bipolar transistor output), which yields a more "musical" and natural soundstage. If you are looking for an amp with "visual bling," look elsewhere. However, if you want "music" "power" and "goosebumps", the Belles 350A Reference provides all three.
Happy New Year to all! I know mine is starting off on a very happy note!