Living room system: class A or AB amps?

Krell and your done!
Good luck with your quest.

@millercarbon

Maybe I should have chosen different words, and leave "class" out of the equation.

Little kids, pets and a living room environment may require a rack or cabinet. For these customers, size, weight, heat and safety become real factors. Nobody wants their toddler to fall face forward into a bed of sharp heat sinks. They may choose D'Agostino Momentum monoblocks over Pass Labs XS300. Because they both sound great but the Momentums run cooler and are easier to fit into a cabinet. Safer and more suitable in a living room.
You may cringe because these restrictions mean they will never hear the system's full potential. You may find it a waste of money. But why not if you have the budget to get awesome speakers and high-end components? Yes, the restrictions suck. But it beats defaulting to a $3,000 home cinema set. 

Best Class A: I do like the warmth and natural sound of Wavac, Ear Yoshino and Metronome Technologie.

Have you looked at the McIntosh MC 1.2kW or the newer MC 1.25kW amps, they have plenty of power to drive those speakers. and they are built to last.