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


don_c55
@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. 

@roger_paul 
"A holographic image certainly cannot be maintained in such a circuit."
BS!!!! That's what SET amps do best!

stfoth,

re: zero-perceived-distortion link...

Tenor amplifiers have no global feedback.  We contend this to be the first step in great amplifier design.  

We then map the low natural distortion of our amplifiers.  This is done for every tone and overtone - at every frequency simultaneously … at every amplitude.  This allows us to understand exactly our amplifier’s dynamic nature of distortion while playing real music and not just the static measurement at a particular frequency and amplitude - the way distortion is measured by the industry today.  With this detailed mapping, we shape our amplifier circuit using Tenor’s proprietary HSI technology in a manner that the brain perceives no distortion.   What little distortion Tenor amplifiers have is now effortlessly and subconciously ignored by the brain.  This is the premise of Zero Perceived Distortion - laying bare the beautiful essence of each original master recording in all of its splendour!


What little distortion Tenor amplifiers have is now effortlessly and subconciously ignored by the brain
stfoth
a different approach on "perfect."

Yes it is different but not correct and apparently not zero distortion.




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

a different approach on "perfect."

>>>>>footnote on history. I was in the big Tenor/Rockport/Shunyata/Audio Aero exhibit in the brand new Tuscany Hotel. The room was 50x50. It was judged by most senior audiophiles and reviewers to be the best sound of show. It was judged by senior reviewer and author of the RCA Bible Jonathan Valin to be not only the best sound at the show but the best sound he had ever heard anywhere. What was your humble scribe doing in this monster system? I was providing vibration isolation stands for all four (4) count em Tenor Amos as well as the Audio Aero CD Player. A customer of mine knew the exhibit coordinator, Jonathan Tinn. Yeah, Baby!