Future of analog controlled class 'D' amps?

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.

Sampling rates are far to low.The original Infinity Switching amp)SWAMP) was at 500KHZ and that was in the 70s.Great bass amps,but lacking a little life/body.

A revolution happened. Oh, sorry you haven't heard?

Yes, I did mean class 'A' transistor amps.

Do BASH amps use digitally controlled or analog controlled class 'D' amps? BASH is spreading in subwoofer amps in the consumer grade.

"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."

The Nuforce Ref 9 is the best amp i owned, and i owned a few from Pass, GamuT, Krell, Conrad Johnson, Tact etc...
I know one guy who sold his 25.000$ pair KR Audio Kronzillas for a pair of Reference 9.
You cannot say that it's not mature.