CLASS D MONO AMPS buy ATMASPHERE MUSIC SYSTEMS

Systems-of-systems-of-systems is a perspective challenge.  

I suspect few, if any, have measured the noise floor on the neutral at their home or work site. Particularly, over multiple-time studies of more than 1 year. 

There is much more worth learning about from DOE, ESRI, NRCC, IEEE (e.g. Greenbook) and the AFRLs have much more to offer. 

Caeteris Paribus is deflective, at best.  Quixotic still.   

Between the GPR/EPR and then the neutral floor noise rise, the advance of the NIST-F2 clock integration, RF energy harvesting & distribution, more consumer DC appliances, EV charging stations...bucolic reminiscence will only provide more melancholy than fidelity.  

I am confident that Ralph's GaN amps will be/are awesome.

I just wrote this on another thread: FWIW: My experience with class D goes back to PS audio GCC 250, which I still use in my video system, but in my 2 channel audio Ive had several W4S, Emerald Physics 100.2SEs, Audio Alchemy DPA-1 (excellent sound but I need a lot power in my room), PSA M700s (also soundd nice), EVS 1200 which I raved about for a year UNTIL it was replaced with a LSA Voyager 350 GaN amp. The Voyager is ~ half the power of the EVS, and yet sounds twice as room filling. From this experience IMO, GaN is so superior (at lease when done right) to conventional class D that it SHOULD have a separate designation. Switching Speed is the juice

Most interesting Ralph .

The photo posted by dill looks just like the Atmasphere class d amps at the Florida Audio Expo in the Unique Audio room. 
 

https://www.audiocircle.com/index.php?topic=180725.new#new

Switching Speed is the juice

Possibly but this atmosphere class d GaN amp actually has a lower switch frequency than most mosfet class d amps on the market, so I find this comment irrelevant to this discussion. And, other than a Technics GaN amp that came out over a year ago, none of the present GaN based class d amps have a switching frequency materially higher than most mosfet class d amps on the market. So, a claimed major benefit of GaN technology for class d amps, a higher switching frequency, is in fact not even being exploited.