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

And one more thing because this is ridiculous.

You said "the velocity of air medium is zero.'

Nooooo

Air molecules at room temperature move about 1000 mph. They are bouncing around and banging off each other at very high speed.

I read this entire thread, oh boy.

From the peanut gallery, all recording systems have inertia. Inertia will always distort the time domain relative to the original input. You can’t get away from this. It is a physical property that is built into such mechanical-to-electronic-to-mechanical transducers (microphones, loudspeakers). Zero "velocity distortion" is an oxymoron. Just as there is no net movement of air molecules in the propogation of soundwaves, so too there is no net movement of electrons in the propogation of electrical signals in audio circuits.

Enjoyment of music comes first. Reinventing physics comes second.

Also, I read your white paper Roger. There is not a single element of circuit theory presented, or is there any citation of the work of many who have explored time domain distortion.

Got clothes?

Ok, so what are you going to do, slow down the propogation of an electrical audio signal to 750 mph? That in and of itself, if achievable, and I doubt it, would time distort the signal even further in the electrical domain. And, I challenge that air does not time distort music; there are microbar or even nanobar changes happening in local environments constantly, simply through the movement of air alone. We know how wind direction can easily change if we hear across a distance or not. Air molecules are chemical entities; electrons are first generation leptons. Each is governed by a VERY different set of physical properties.

Changes in playback speed change pitch.