High end Class D amps?

This statement is blatantly false. Class D amps are limited in their ability to play low impedance (and severe phase angles) in the same manner as traditional solid state,

No it’s not, and you know it and are in denial, your just once again in "product protection mode for your yet to be released Class-D".
 Just try to get any Class-D to perform as well as an amp with bi-polar output like a big Gryphon's into a pair of Wilson Alexia’s, the Class-D will be shamed.

Well this is an excellent example of how George has no idea what he's talking about. Sheesh.

George, perhaps you could come up with some evidence of your preposterous claim?? You know what they say- photos or it didn't happen.

No you have no idea, or, as I said you are in "product protection mode" and need to say the opposite for your future release. Most probably the latter I would think.

I’ll state once again as yet NO!! Class-D (and that also goes for my choice Class-D Technics SE-R1) will perform as good into a pair of Wilson Alexia and such, with their EPDR bass loadings like a hi current Gryphon Antillion etc etc can.

George - You've brought up this notion of EPDR in several class D threads, but haven't explained how it relates to class D. This is a term that was made up by a Stereophile reviewer to try to explain why linear amplifiers had a hard time driving speakers with a reactive load. Specifically, speakers whose current demands are not linearly related to the voltage across the speaker terminals. 

In a linear amplifier, this will cause a higher than expected thermal load on the output transistors because the high current demand can exist even with a high percentage of the rail voltage across the output devices. 

In a class D amplifier, the output transistors don't care about the voltage across the speaker since the voltage output only affects the duty cycle, not the power dissipation. They are constantly switching on and off at their oscillation frequency regardless of the voltage across the speaker. As long as the amp can handle the current demands, the fact that the load is at all reactive is irrelevant. 

If you disagree with these statements, please explain why. (And don't just repeat your previous statements since so far you haven't described how EPDR relates to class D). 

Obviously, you can contrive a situation where a given class D amp does not have the current capability to drive a particular load at the desired voltage, but this true with a class A or A/B amp as well. And, in fact, the thermal challenges are much more difficult with a class A amp, and even a class A/B amp, to meet a specific desired current capability.

George - You’ve brought up this notion of EPDR in several class D threads, but haven’t explained how it relates to class D.

It relates to any amplifier seeing the low EPDR loading which demands extra current to be delivered from the amp, which Class-D’s don’t do as well as good linear Bi-Polars can.

Obviously, you can contrive a situation where a given class D amp does not have the current capability to drive a particular load

I don’t contrive anything, it’s fact Class-D can’t do current into low impedances like good linear bi-polars can, and if you don’t believe or have the knowledge to understand that, it’s your problem not mine.

Now excuse me I’m going back to the workshop to finish off my 1973 Ducati 750 sport (round-case) engine main bearing replacement.

And Ralph in the below post below, it’s just not the GaN transistor wrong yet again, you forget the output filter and feedback also.
Just leave it be Ralph, anyone can see your in "product protection mode" your not doing yourself any favours.

So explain how an amp with an output impedance of 10 milliohms

Just like a Technics Su-G700 Integrated GaN Class-D with it’s milliohm output impedance also can’t drive the Alexia load either!!! It’s got the so called wattage at 4ohms

Back to the Duke, more important than talking to shillers of their own yet to be released amps.