I have received/read in another forum following statement:
"If you listen close to the tweeter (within a feet), all variants of Class-D amps have the so called switching noise. That is normal and does not affect the listening experience. The noise level is dependent on the speaker's efficiency and tweeter."
The statement was posted by someone who is not really independent (strongly connected to a company selling good amps, but producing this kind of noise).
According to what I have experienced and learned so far, these sentences are not correct, they would be correct if they were modified e.g. as follows:
"If you listen close to the tweeter (within a feet), several variants of Class-D amps have the so called switching noise. That is normal for some manufacturers and if it does affect the listening experience, everybody has to judge for themselves. The noise level is dependent on the speaker's efficiency and tweeter. But: There are also absolutely quiet class D implementations out there..."
My Lyngdorf e.g. is absolutely quiet, so I can confirm that there are quiet class D implementations out there (quiet means in this case: no audible noise, I am not talking about noise-measurements), and several members confirmed and reported this here also: sure there are some class D implementations producing this noise, but others don't!
I just like to correct things, because there are several people out there searching for useful information in forums... and I don't like if someone with strong relation to a manufacturer tells them "fairy tales", so at least these people can find correct information here.
But of course someone may correct me, in the case that I am wrong.