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

OK- so despite my asking several times it appears you did have a measurement system after all! Why didn't you just come out and say so the first time I asked?

Air is anything but a constant when dealing with the speed of sound. Humidity and air pressure both play a role. Do you have compensation for pressure and humidity?

I'm having a problem with several other comments here as well. One was the speed of the power supply and another was the speed of the amplifier. Long ago I discovered that any power supply has a timing constant and if the amplifier goes lower than that constant IM distortion will rise. So that is a rule I've been careful to follow. But from your comments it sounds as if you are talking about something else. 

Also the speed of the amp is another area that is well understood. Are you referring to the speed of the amplifier as propagation delay? 

Here are some comments...

http://v2.stereotimes.com/post/hcat-df100-mk-iv-and-high-fidelity-pro-cables-a-followup/

This was coupled with another product under review at the same time.
It also preceded the most recent breakthrough (higher rez) that is yet to be reviewed.

I don't understand much, if any, of Mr. Paul's explanations for his discovery/invention

I would not feel bad about that. I suspect that mach 1 has nothing to do with the inside of an amp. Given two explanations, its likely that the simpler one is the correct explanation. We have Mr. Paul's rather lengthy explanations and we also have a very simple explanation for the same thing.

Air is anything but a constant when dealing with the speed of sound. Humidity and air pressure both play a role. Do you have compensation for pressure and humidity?

There is no compensation necessary. Assume 750 mph as normal. Even if the concert hall all of a suddenly became 20 degrees warmer and loaded with humidity the actual speed of sound may go up or down by a small percentage but where ever it ends up - (751 mph?) it is constant.

For it to have an impact on the velocity tracking that I'm talking about it would have to change (as above) between notes in the performance.
And even then it could only screw up the image for that quick second until it remains stable again at the new value. Temp and humidity generally take a long slow time to modify the speed of sound.

OK- so despite my asking several times it appears you did have a measurement system after all! Why didn't you just come out and say so the first time I asked?

This measurement is something that is applied to the circuit design itself - not to the unit on the bench. It tells me the level of resolution that the built unit will have. But it is not something that you can attach as probes to the hardware itself. Once I have the data given by the virtual analyzer it only confirms the current circuit configuration and settings will be repeated for each unit built to that schematic. 

If I were to try modifying the circuit to increase the resolution - it would have to pass the virtual test measurement first before implementing the mod into production.

I designed the computer model to interact with some of the hooks in the spice simulation software. I also use the Tina software (Texas Instruments) simulator.

I actually had to contact TI and notify them of a bug I found in the software that was falsely reporting raw THD measurements. They have since recognized the problem and have updated their software.

Their technical staff suggested I "send them my schematic" and they will see what kind of distortion issues I have. (Ha!) I said no thanks just fix the program.