Originally Posted by Fabrik8

Class D amps don't have the audio bandwidth for anything but subs, unless they're running at much higher switching frequencies than a few years ago. There are two amps in the system, one for the sub and one for other speakers, so only one could be a class D. I was talking in a fairly general sense about fans though.

Edit: I see Alpine is doing full audio bandwidth class D stuff now. Pretty cool, I was hoping that would happen sooner or later.. There are probably other brands that do too, but I have no interest in car audio anymore so I'm not going to find out.