Are future improvements in Amp/PreAmps slowing to a crawl?

kosst,

Do you think that after decades of work trying to analyze the tiny events that lead up to the production of harmonics that I'm going to say
"Oh I know - I'll just use negative feedback - why didn't I think of this before?"

Ok here is a fact:
If you see something and react to it and use a countermeasure against it to "fix" it you are applying some form of negative feedback.

True.

The trick is where do you apply it and to fix what problem?
There is no "loop" from output back to the input.
I don't monitor voltage fluctuations seen on the vertical axis.
I use a form of feedback that involves shifting phase by micro-degrees at a particular location in the circuit that will allow this type of correction to be effective in stopping distortion from happening. This type of "feedback" is 1000 times the potency of classic negative feedback which we know does not work.

The Auto-Focus by default could not "automatically" focus anything unless it can detect and react.

Classic NFB can only suppress harmonic distortion to lower levels.
My circuit "correction method" stops distortion all together.

Mr. Paul, even assuming this gizmo reduces THD to near zero (or even zero), there is more to the sound (or lack of a particular sound) of an amplifier than the amount of THD.  Or are all issues directly related to harmonics?

stfoth

...are all issues directly related to harmonics?

NO - All issues are related to nonlinearity (NL) which caused the harmonics.
Harmonic distortion is one by-product of a NL circuit.
Imaging suffers even with the slightest amount of NL
A holographic image certainly cannot be maintained in such a circuit.

http://tenoraudio.com/pedigree/the-perfect-amplifier-.html
http://tenoraudio.com/technical/zero-perceived-distortion--.html

a different approach on "perfect."

@roger_paul 
"News flash - As a matter of fact I have.
You see - all forms of distortion start off as phase shift or timing issues."
WRONG. Just because a distortion wave form appears slightly phase shifted from the fundamental does not mean that the phase shift causes it. Inductance, capacitance, and resistance inside the transistor itself causes nonlinearity. The important mechanism of these passive characteristics is energy absorbsion and emission, be it from the input signal, the power source, or the output waveform. There is no law that says this must happen in perfect phase with the fundamental. The phase is a result of the mechanism of distortion as much as the distortion itself. The phase is in no way the cause. 
"I use a form of feedback that involves shifting phase by micro-degrees at a particular location in the circuit that will allow this type of correction to be effective in stopping distortion from happening. This type of "feedback" is 1000 times the potency of classic negative feedback which we know does not work."
You do not. Negative feedback isn't some fixed value. It's a portion of the gain. The best you could do is pipe the full gain of the amplifier into feedback. That doesn't make a very effective amp though. You can't make the feedback greater than the gain of the amp unless you're going to do something crazy-stupid like amplify the feedback itself. Of course, if you did do that, you're digging into that whole can of worms with inherently nonlinear gain devices which doesn't solve your problems at all. 
You just don't seem to have any grasp on the facts and theories at work here, Roger. Just admit it.