To your question - yes, I moved from Class A amps (MSB) to Class A/B with Pilium and very happy with the change. Pilium amps run cold and sonically they are superior as to my taste. It is a kind of a rare occasion when you can enhance pleasure in an environmentally friendly manner.
Ditching Class A Amps due to Heat - Sort of a Poll
A discussion elsewhere about the future of Class A made me wonder how true one statement really is. So the questions are...
Have you done away with your Class A Amp due to Heat concerns?
Will you be moving away from Class A Amp due to Heat concerns?
Will you never buy a Class A Amp due to Heat concerns?
I only have a class A/B unit that does Class A up to 6 watts with almost no heat so really can't speak for those who have used in the past or currently own and run Class A Amps.