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.

stevecham wrote,

"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."

Air is considered motionless in the room. The motion of something passing through air is relative motion. It's customary to consider the velocity of air zero relative to acoustic waves passing through it. Consider a listening room on a moving train where music is playing. The velocity of air in the listening room is still zero relative to the car of the train. Thus the velocity of acoustic waves passing through the air in a car on a moving train would be the speed of sound, the same velocity of acoustic waves in a room in a stationary building. It would be absurd to consider still air is moving at 1000 mph when it’s relative motion is zero. It would be equally absurd to consider the air in the room moving at the velocity of the Earth’s rotation on its axis or the velocity of the Earth’s motion around the sun. Besides, all the air molecular motion cancels out. The net velocity is zero since it’s all random motion. 

@geoffkait 
I hate to break it to you, but stevecham is right. The speed of sound through air is directly proportional to the temperature of the air. You cannot make ANY assumptions about the speed of sound through air without considering it's thermal kinetic energy. The problem is with Roger saying stupid things like this:
"Changes in the playback speed of the music signal generates harmonics. Air never alters the speed of the traversing sound waves - neither should the amplifier. If you can stabilize the velocity of the amplifier you have simulated that property of air. This is readily recognized by the brain." 
The speed at which the diaphragm of a driver moves isn't dictated by the speed of the electrical signal passing through the voice coil. It's dictated by the rise and fall of electromagnetic waves traveling nigh the speed of light. The rise and fall of those waves in the time domain is what gives rise to frequency, not the speed of the electromagnetic energy. There's no reason to believe that any amplifier significantly manipulates the speed of electromagnetic waves at audio frequencies. He's suggesting that circuits can act like prisms and that's not what circuits do. Just like waves on a body of water, small waves ride atop larger ones. If a small wave shares the same relative position and vector of a large wave, the small wave simply rides atop it. EM waves do the exact same thing through transistors. They don't apply gain at earlier or later times based on frequency. Again, he lacks proof. Not only can he not prove he's solved a problem, he can't even prove the problem exists. 

My preamp sounds great it didn't crawl using CJ ET5 maybe upgrading to ET7 soon.Enjoy!!

Costco_emoji, obviously I’m referring to standard temperature pressure at sea level. You can ignore the kinetic VELOCITIES that Steve was trying to promote. I never said the speed of sound isn’t a function of temperature, Mr. Smarty Pants. Stop trying to put words in my mouth. The speed of sound is a constant at standard temperature and pressure. In Roger’s case you can assume any temperature or pressure you want. It doesn’t matter. He wants to preserve the speed of sound - whatever it is under the conditions at the time. Duh! The recording could have been made In 110 degree heat during a thunderstorm. It does not (rpt not) matter. Follow?