D'Agostino Progression monoblocks replacing my Theta Prometheus monoblocks

And then it is no longer an amp, it is a radio transmitter.

Yeah I think Cyrill is pushing it a bit high, a couple of mhz should do it, this way the class-d’s low order filter can do it’s job properly and not leave any residue of the switching frequency left in the audio band.

Like the Stereophile external bench filter they now use when they test Class-D’s square waves, it leaves no saw tooth switching frequency ringing on the tops of the square wave.
Trouble is that filter can only take a watt or so before it would blow. For it to work with today’s Class-d’s for the listener it would have to handle the full power of the amp, impossible.

Cheers George

I was curious whether the linear power supply in the Theta version "cured" the problem I had with the sound of the Hypex/Ncore Class D amp modules powered by their SMPS. Based on the comments, I guess not. I do not blame Theta or David Reich for not being able to pull off a trick that no one else has been able to accomplish with the Ncore modules.

The linear supply was never going to fix the problems with Class-D

The problem with class-d for now is that the massive switching frequency is too low (approx 700khz) for the filters to filter them out effectively without effecting the audio band in phase shifts and or even early roll off, in some cases. In the future when technology catches up to allow double or triple the switching frequency speed then Class-D will become a force to be reckoned with.

Here is Solutions Cyrill Hammer take on it also.
"if you want to have your product performing at the cutting edge it is not possible with today’s known switching technologies. In order to come close to the performance of the best linear design we would need high-current semiconductors that provide switching frequencies of several MHz or even GHz."

Cheers George

After changing from the Theta Prometheus (which is a really great sounding amp) I have had a pair of ARC Ref 250 SE monoblocks, and Momentum monos for a back to back comparison. All three were with the same ARC Ref 10 preamp.

Couldn’t get 3 more opposite amp topologies.

I'm surprised the Momentum monoblocks didn't push your buttons. I know the  Progression is a step up in power, but the topology will be similar to the Momentum, and should have had enough power for you.   

Cheers George

statman
  D'Agostino Progression monoblocks replacing my Theta Prometheus monoblocks

Be interested in what you hear, as when you get them you'll be hearing great linear amps in the Progression monos, compared to what you were used to in the Theta which are great Class-D. Hope that's all you change at first to get a good idea of what you hear between the two..

The Wilson Max 3 are a bit of a pig to drive in the bass, I expect the Progression to do well here, and maybe sound a bit more analogue (richer) through the mids and transparent in the tops. Which has been my observations when comparing the two of similar status amps. 
https://www.stereophile.com/images/archivesart/909WM3fig1.jpg

Cheers George