I’ve recently purchased a GoldNote PA-10 which touts some kind of a GaN architecture combined with class A (or resembling a class A) design. Not exactly a hybrid, still more “class D” overall. It sounds spectacular, even running out of my integrated through preamp out. Looking at getting a decent tube pre to accompany it. Maybe get another one and run them dual mono.
it’s a power amp, not integrated. But just wanted to advocate the great possibilities with GaN offerings. It’s tonally rich, balanced, great stage, and turned my speakers into super quick little monsters.