Which Class D Amplifier? PS Audio, Ghent, Nord, Merrill or other???

tweak and others, just a curiosity question. In my rack space is at a premium, so placing amps on separate shelves would be a problem. Is there a relatively inexpensive sheet of some isolation material, that would not impact the finish on the lower mono, that would prevent whatever it is that causes the amps to sound better not stacked? So they can be stacked without negative sonic impact? Is it possible the sonic issue when the monos were stacked was just a sonic fluke of the stereophile reviewer’s listening room, I have not read anyone else experiencing the same?

++noble regarding guido. To a couple of other posters, don’t let the door hit you on the way out. It’s much more fun without you two "telling" us what to think, over and over. It will be a struggle, but there are a couple of knowledge experts we actually enjoy listening to. 

George, you have lost another fan here. I don’t bother to read any of your posts. Using knowledge as a hammerhead is a bore mate.

Hi George, I hope that something comes along that is important enough to you that will help you snap out of your obsession with trashing class D.  Most of us don't care about it one way or the other. You seen to have become caught up in it for some reason.  Let them have their fun big guy.