Hmm... HOW does it sound?
I have a pair of Acoustic Reality amps ( ICE ), some Teac Reference Units ( ICE I believe ), some Nuforce Class D amps ( I think they rolled their own filters ) and a NCore unit ( an eval board that I need to finish ).
The NCore sounds the best, the Nuforce amps are second best but the ICE amps, no matter how powerful, sound closed in the top. All the amps have excellent damping factors so their bass control is superb but the ICE amps leave me cold from the upper midrange on up. This might no be an issue in a home theater but for music they are a non starter.
Next I want to try the Purifi boards.
But, when it comes to ICE, this is a case where the measurements do not really tell the whole story.
BTW, my go-to amps are FET Class A, tubes and a SIT amp ( not the Sony VFET ). All of those units sound fantastic from the bass (not the deep bass) to the stratosphere.