Class D

Benchmark AHB2 amp is not Class D. 

Mola Mola Kalugas No, it is not as good overall as a great  A / AB mono amps. But it does sound great. And it is small, beautiful, cool to the touch, and fits in very well in an 'upstairs family room'.  And it is small, beautiful, cool to the touch, and fits in very well in an 'upstairs family room'. My basement system is better.

Correct, they are a compromise, as they stand. They still need "two problems" addressed I mention, one Technics have done with 1.5mhz switching frequency in the SE-R1

1: They have to correct the phase integrity through the upper-mids/highs (up to 70 degrees out of phase) https://ibb.co/vvwzGV5 because of the (switching frequency and it's output filter) WITHOUT resorting to "musicality destroying" gobs of global negative feedback to repair, as some have tried.

2: And the other is "current ability" to "resemble" doubling of wattage as frequency halves from 8 to 4 to 2 and hopefully maybe 1ohm, so they're not "current starved". Unlike the classic larger A A/B models  Krell, ML, A’gostino, Gryphon ect ect are capable of doing all day and yawn at it.
I can't see this happening with Class-D until future output stages/devices are re-design (maybe with even bi-polar dveices).
And then hope the SMP's are up to powering it all, with no current limitations also, if not then back to better big bulky no noise linear power supplies like I use with my Hypex NC400 (BelCanto Ref 600m) monoblocks.

Time will tell, if they can ever match todays "classic hi-end linear amps", that also took ages to get where they are, from the early days of horrible germanium transistors amplifiers that tried to take over from tubes.  

Cheers George    

I wonder if George can tell us how much of the phase-correction in the Technics unit is from hardware, and how much is through software (delay).

I wonder if George understands the math of feedback?

Wasn’t even addressing you, but seeing you butted in yet again, wonder if you understand your own ears, I doubt it very much, as you seem to think all that counts is wattage, and have no idea, just how bad global feedback is for sound quality when not used sparingly, and why some of the best sounding amps ever made have only local feedback.

To me the best sounding amp doesn't have a sound.