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

Its not that hard to design an amplifier that is absent the higher ordered harmonics. Such an amp will not use any loop feedback though, as feedback will add harmonic content and IMD of its own regardless of the left/right ’speed’ of the amp (as seen on an oscilloscope). See Norman Crowhurst.

Actually, I fixed that.

I have not yet published it, as I’m waiting to be able to produce an amplifier and sell it to people, before others grab it away and make it their own -to do their shtick of stealing other’s ideas and thunder. I showed it to a ~very~ well known amp designer and explained why/how it works, and he called it, and I quote: "f**king brilliant". I don’t design circuits, per se, but I do understand the overall complex physics in-situ, more than some might.

kosst_amojan,

If designers are discouraged in making improvements or trying to "perfect" a component because another component has its own issues then there would be no progress made anywhere.

Since I have succeeded in cleaning up distortion in amplifiers I guess I'll have to address the speaker issues next. However it might surprise many readers here that the bulk of ALL issues in a given playback system are in fact tied to the electronics. If you had the perfect amplifying method - a pair of Radio Shack book shelf speakers would still give you incredible imaging.

Its the electronics that provides 90% of a systems quality.

+1 This is just blatant nonsense. On the other hand, it mirrors and feeds on  the obsession of many audiophiles with exotic electronics. These days, the electronics are  boringly irrelevant once you reach a decent quality level (and that level is easily achieved and cheap).