What do you mean by “depth perception”? Do you mean distance perception - ie how far something is away? Or do you mean the depth that something sounds - ie a cello sounds a foot deep say, though it might seem 10 feet away.
If you mean distance perception, what distance cues do you think are captured by stereo recording and what evidence do you have that “small signal linearity” is relevant to it?
And the same for depth - what “depth“ cues are caped by stereo recording, and what evidence is here that small signal linearity is relevant to it? And how does a sound, a cello say, or a voice, have “depth”?
As I understand it, human beings are not very good at perceiving the distance of a sound, and stereo recording and playback is even worse at reproducing accurate distance cues.
Let me make myself clear.
I have no proof that a 300db noise shaper, is better at small signal linearity compared to a 200db one. Furthermore, I have no proof that small signal linearity is directly proportional to depth perception, nor do I argue that I understand how the brain ear works regarding the complexity of human interpretation of depth clues.
These are Rob Watts arguments, and sometimes, refuted by his opponents.
I merely stated what the man had said to the extent of knowledge, because it had been claimed that he had said -300db is directly audible.
Frankly, my level of education does not reach that far.
I go by what makes sense to me, though knowing what makes sense to me, may be wrong.
By faith, I tend to accept what Rob Watts says, unless I see evidence to the contrary.
He is an accomplished engineer, who has designed a unique DAC architecture from ground up, with accompanying analogue sections, that objectively rank among the top five, at least.
To me, his "claims" carry far more weight than anyone who does not even command half his expertise.
But that's me! a personal view. He gets my vote, over cheap jesters who continually mock him .
And why?
Despite all arguments, after many years, his designs produce results! perhaps one could get something similar, mass produced at lower prices, but I rather stick with Chord.
The devices are long lasting, well made, and I don't feel the need to constantly lust after this year's model.