Doesn't look like they're based on an ICE model. The only part reference I can find on their older ones is: CDA2092X2NR That doesn't show up anywhere but on their own site.

Their newer designs use TI's Digital Amplifier parts. That includes the "600W Class D Power Amplifier, Balanced Input, 2 Ohm". That amp looks really interesting. I might pick up the parts to build one. $235 for the kit, not bad.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris