The Channel Island Audio amps are based on a module called "UcD" which is similar in concept to the "ICE" module but supposedly incorporates an improved topography which eliminates sensitivity of distortion to load impedance. I have five D200 amps in my multichannel system, and I am well satisfied with them. Like the H2O amp the CI Audio amps use a massive conventional power supply.
If you want to try a top of the line digital amp for less than a grand, and can do a DIY project, the UcD modules, and power supply modules and transformers are available from Hypex (www.hypex.nl).
If you want to try a top of the line digital amp for less than a grand, and can do a DIY project, the UcD modules, and power supply modules and transformers are available from Hypex (www.hypex.nl).