Just took delivery of an International Recitifier AUDAMP7S stereo half-bridge class 'd' amp.
I'll be trying to build a battery operated 2nd system with it.
Unfortunately, it has NO built in PS, so it is either battery of +-55v or so....or the hardway of a conventional or SMPS.
There are NO 'exotic' parts....caps and resistors all appear to be off-the-shelf.
I wish I could post a picture!
Kijanki, I don't know if I mentioned this before, but I WORK for IR, in the 'fab' making power and other semiconductor devices. I have spoken to the design guys and they will eventually make a house call to listen to there stuff in a Magnepan system.
The voicing of these amps was not a major concern though many panel type listening tests were conducted.