Muralman1...I think that we call an amplifier "digital" if its output stage is pulse-width-modulated (high speed switching transistors ON or OFF) rather than a proportional conduction device (transistor or tube). The control module, ICE, Tripath, or whatever, is a (perhaps important) detail.
What makes the H20 amp good? Raves don't carry much weight without some backup facts. The $2000 price (but it isn't really for sale yet) is no great deal. My three (3) CarverPro amps cost me $2517. That's $0.69 per watt!
CarverPro not only has a web site with specs on their product, but also offers the schematic diagram for techies like me. When will H20 lay their cards on the table?