Your posts indicate that you prefer Class A and find Class D lacking. This is a perfectly sensible (and, might I say, accurate in most use cases) conclusion. Unfortunately, high-current Class A amps are heavy by definition.
My suggestion is to focus on Class A monoblocks. Half the weight. I don’t even know why anyone would ever buy a stereo amplifier.
On the higher level... not so sure why weight is a problem. How often does a person move their amps?

