Future of analog controlled class 'D' amps?

I think so.

I would say yes, if done correctly.

It describes Audiofankj's and my amp's advantage to a tee. There are actually very few analog powered class D amps on the market, UCD amps being the exception. Most manufacturers make do with digitally powered modules in a box because it is far cheaper, and easier to accomplish.

A lot depends on the 'Class A' amplifier. Do you mean class A transistor- maybe, if class A transistor amps do not improve at all in the future- which is unlikely.

Given that class A tube amps will not improve at all in the future :), again maybe.

Overall you will see Class D take over the bottom end of the solid-state market, and make forays into the high end. Since it is not a mature technology yet, price/performance curves *do* suggest that class D will be challenging the current art. But not today. Give it 5 years and lets see if conventional technology does not improve as well.