I currently have the D-Sonic M3 1200-S and have to say it is possibly the best amp I have ever had. I have owned the Wyred ST-500 for several years and loved it. I then went to a Bel Canto Ref 150S, which I thought was more transparent and neutral than the Wyred, although the St-500 has a pleasing roundness in the mid-range that gave hard rock real weight. I then bought the mAmps which were definitely more powerful than the Ref150S but I never was happy with the sound - I personally preferred the original ST-500. I then switched to the D-Sonic (with a short foray to a Parasound A21 but that's another story) and the difference is literally "jump-out-of-your-seat, holy crap, I can't believe this" better.
The other posters have it right - Dennis may not talk like an audiophile but this amp is the real goods. Words like "transparent", "neutral" etc. don't really capture what this amp is like - there is refinement,transparency, slam etc. etc. but above all there is a sense of flow and ease that I simply have not heard with any other amp - and I've had a lot of good amps in my system over the years. In the absence of a technical background, I can't claim that it is the Abletec technology that is responsible for this but it sure seems that way. It is, in my view, THE amp to beat at a real world price. Absolutely spectacular.