Class D makes total sense to me
In my system I can see the power output from my power regenerator.
And below are the output readings in watts with different topology of amps I get :
1. Class A 100 watt power amp - 315 watts at idle
2. KT88 tube mono blocks outputting 100 w each in ultra-linear mode - 260 watts at idle.
Now hear this
1. Nuprime STA-9 Class D mono blocks playing at ear numbing bass levels - yes everything in the room shakes - barely 20 watts on the display.
So all the power I actually need is 20w feeding into my high efficiency speakers, and every thing else is wasted going into my class A or tube amps as heat. And I have to use my AC to control that heat, which is an other bummer.
So class D is the future for me. I have 3 pairs of tube mono blocks...yes...but will soon be moving to one of the below 3 channel power amps :
1. Nord acoustics UK
2. KJF audio
I've had a devialet integrated amp long time ago, and it sounded very close to a class A amp even then. Class D has evolved a lot ever since. So I will have no inhibitions moving from tubes to class D if I find the right one.