My NAD 3020 D proves your Class D tropes are wrong

The NAIM Atom is one heck off a LiL Mulekicker, sounds better warm...

I agree, some topology and combinations of components just need warm up... The Ayre VX-r a great case in point,, Ontrak semiconductor version took days...leave it on ! The twenty w Diamond circuit was golden after a few minutes....twenty.

D shows promise,IF people have an open mind....ears, perhaps both

I didn’t even know what a class D amp was and as it turns out I had already owned 2, for years. I owned 2 ICE amps that powered my power sound audio subs designed and built and sold by Tom Vodhanel of PSA.

Funny thing, he sells a ton these ICE powered subs and the owners of his subs are amazed by the voicing or tuning of his subs and quite a few have expressed that they sound better than the SVS line of subs with MOSFET
amps.

What I’ve found out is that it’s the design skills of the designer that matter the most in designing gear no matter what he or she decides to use. Many designers go about in many different ways to get the best sound they can get. The quality of sound coming from a component is not based on the fact alone that it is a class A or A/B amp. It’s the designer. There are good amps made in every configuration and bad amps made by bad designers.

I'm using one of these:

https://www.ebay.com/itm/50ASX2-2-Channel-Power-Amplifier-Module-2x50W-HiFi-Power-Amplifier-For-ICEP...

Sounds perfectly good to me.  

I kind of backed into class D amp’ing when I set up my 1st real desktop audio system w/discreet DAC in this home office ~2008 (after years of 2.1 "computer systems" running of a soundcard). There’s no room on this crowded desktop for class A/B or tube amps.

I really lucked out: the class D amp I bought was Wyre4Sound’s ST-500, which I use on its side to save space (got the blessing of Wyred4Sound before doing that). I paired it with a very revealing passive monitor (ATC SCM12 Pro) and the sound was excellent. Have had 2 other high-end 2-way passives here since then (Aerial Acoustics 5B; and vintage KEF 103.2). All sound very good w/the ST-500.

I will eventually upgrade to more current class D technology. I lean toward Nord Acoustics hypex-based stereo amp that allows use of Sparkos op-amps (I’ve used them elsewhere & know how good they sound). But if I trip over a gently used Cherry stereo, maybe that...

I formerly agreed with Teo, but after getting a VTV amp with the Purifi module and the Sparkos op amp, I am truly impressed with the sound in my system.  It sounds neither warm nor cold, but reveals an amazing amount of information in such an utterly clean fashion.  Same with my impressions of my friend's NAD M33 integrated amp, which has the Purifi module as well.  Both operate as cool as a cucumber.  I am being made a believer, in spite of my dislike of early Bel Canto, Red Dragon, and Nuprime Class D amps... which sucked the life out of the music.  
This is a quote from a well known speaker manufacturer who will remain nameless, but I trust his ears, because I am hearing the same thing he is:  

"Yes, I have read and heard many good things about the Purifi amp modules. Maybe I'll try them. I have been using the Cherry amps which are very good class D also. This technology will eventually push AB amps out of the market."  

Class D technology has arrived and is ready for prime time and with the Cherry, Apollon, and VTV amps, it is very affordable.   If you have the enough coin of the realm, I suspect the new Merrill Class D amps would be incredible.  The GaN technology is on the cusp of a new era in amplification as well.