Class D

Douglas,
I hope this tease of yours dies quickly.......What is this mysterious class D amp that you love?  Is your mouth tied shut till the review?  he he....If you absolutely cannot tell us more.....then when is the review going to be published?

Exogal?

ricevs, I'm just ebullient due to the performance. Forgive me, I won't talk about it anymore.  ;)   The article should be coming sometime in the first quarter of 2021. Still some important system building to do for an attempt at ultimate build, performance, etc. 

No, it's not Exogal. However, I am using the Exogal Comet DAC with it a lot, with spectacular results. 

I did not hear anything from the Gan amps at AXPONA that would make me think they are superior to the one I am using.

I believe you would have, if the one/s you heard used the GaN technology to it’s fullest, which is to be able to increase the switching frequency 3 fold to 1.5mhz like Technics did with the SE-R1 and maybe in Feb 2021 the SU-R1000.
Then the "switching noise output filter" can also be set higher and so eliminates most of the switching frequency noise left at the speaker terminals. Without introducing phase shifts back down into the audio band, like what happens with lower 600-800khz switching frequencies/filters.
EG: in red https://ibb.co/vvwzGV5

Cheers George

@atmasphere , Ralph, would you ever get caught building a class D amplifier? Seems like the antithesis of what you are all about. Class D amps can sound very good but there is no magic there, not like your amps, Pass amps or John Curl amps. I have never heard Boulder or Constellation amps. With good speakers it is that magic that counts. So what if it is harmonic distortion. Us audiophiles just want to be happy and a great amp is like catnip. Class D amps just do not get me high, at least yet.