How is the Class A amp going down south? Sonically? Is there are built as amps of yore, they shouldn't be too difficult to bring it up to spec. In all my years of doing this hobby, I still haven't found something radically different, either in size or price, that can replace the traditional amps I have.
Class D...for me is...not what I have running in my main system. Most of my amps are primarily A/B running closer to A.