Atma-Sphere Class D… Amazing

How can you begin to know what someone will prefer? How can you begin to assume that you know what "better" means to someone else?

I answered that question several times on this thread. You deny its reality and I can't help that. So let's put it a different way- It really helps to keep up on research FWIW...

And yet it’s your product and you are the one making claims about your product and not providing measurements, saying "You either accept it or you don’t- much like you might if you saw a graph on our website- which you might believe or you might not." That sounds to me like "trust me". Asking and expecting me to trust some stranger is even worse.

And it isn’t, as I have said, that I don’t trust their hearing, it’s that I don’t trust their perceptions/taste.

What is a claim I've made? Just so we're clear on this. FWIW I've not asked anyone to 'trust me'. I was pointing out with that comment that such is an issue- its one thing for a manufacturer to put up information on a website. It's quite another when someone else does it. As a result I don't see the point; we already know what the amp does. The question now is really to our customers- do they think that the amps do what we said they would? My experience of the last half century is that if they don't think so they won't be customers.

And yet it’s your product and you are the one making claims about your product and not providing measurements, saying "You either accept it or you don’t- much like you might if you saw a graph on our website- which you might believe or you might not." That sounds to me like "trust me". Asking and expecting me to trust some stranger is even worse.

And it isn’t, as I have said, that I don’t trust their hearing, it’s that I don’t trust their perceptions/taste.

Its not by job to educate although apparently I do that with all the time I spend writing... Your position seems to arise out of you don't accept that the sense's perception and taste are two entirely different things! The former is autonomic and the latter conscious. So far as your writing is concerned, you conflate the two, which is a common mistake.

Not a lot of amps with distortion 120db down that would be said to have a "design issue".

Exactly!- but I said 100dB down IIRC and I do consider that an issue. Most of the numbers guys I run into think maybe -85dB to -90dB is acceptable. I know better, but good luck trying to convince them of that! So I don't bother.

@kuribo 

You were doing a poor job earlier in this thread masking your Purifi bias. Now, you have removed all doubt.

It’s true the best measurements are those done by qualified and trusted independent parties.  Maybe that will pop up somewhere soon.  Meanwhile hope to give the Atmasphere amps a listen soon maybe at CAF. 

@atmasphere 

You may have already covered these issues earlier in this thread, but could you please explain a little more about the following two issues with regard to your Class D amps?

1. I noticed that the switching frequency for your amp is 500 kHz while several other GaNFET amps use a higher switching frequency. Did you decide that 500 kHz represented a "sweet spot" for switching frequency in your design? Does the choice of higher rates have unwanted side effects that can adversely affect sound quality?

2. What factors entered into your choice of a toroidal power supply rather than a SMPS? What number and size of capacitors did you use in the power supply and how did you decide on the amount of storage needed?

Thanks for any additional info you can provide!