Has anyone heard the new North American products preamp and amp?

cleeds, you and Mapman are obtuse. Where Roger's new amp differs is that all frequencies reach the drivers at the same time and thus the sound passing through the air to your ears is as it would be were you at the recording.

Since, however, there are other stages of amplification that are not corrected, there must be effects of these that are not corrected, but perhaps they are nowhere near those of amplifiers.

At any rate, what I am hearing exceeds even the good sounds of the Zanden suite at CES.

Roger, please allow me to preface this post by admitting that the technical content of this post is a bit "over-my-head". That said, I did have a peak at your website products, but have not read your white-paper. While it is conceivable you are a "genius" and truly have developed something cutting-edge or beyond "normal human comprehension", it is also conceivable neither one are the case.

I have read numerous posts on this site from mapman, and frankly consider his input rather informative and in many respects on par with my way of thinking. It is because he has chosen to "engage you" that I have even more interest in this topic.

At face value, I would be inclined to think that the technology you have used in order to build a consumer grade product would be better suited for the scientific community. Moreover, you have priced your products at a point where there seemingly has been some kind of compromise (i.e. some sacrifice in sound and/or design quality in order to maintain a price point where you can still "sell" and have a "business".) So even if THD is zero, and assuming that is discernible to the human ear/brain, there are many other variables at work here that matter (theoretically or practically). 

While I certainly would be interested in hearing, seeing and otherwise interacting with your products, this is likely not possible/practical for me at the moment, but I look forward to hearing/reading more in the future as your product/design etc. gains some presumably well deserved recognition. I sincerely wish you the best of luck in your endeavors.

Yes, whatever.

tbg its a good thing Roger has you as a translator.  What you said and what he said seem like two totally different things relating to speed of waves.

An interesting discussion. True innovations speak for themselves over time. Like those of Lincoln Walsh. We’ll see....

Mapman, from your speakers all sound waves travel the same speed. From your source and preamp to the amp each stage of amplification passes different speeds, except in Roger's X-10 MkIII amp.

Were you to have the opportunity to hear this amp, you would easily hear the difference. If you are ever going to be near College Station, TX do drop by for listening.

Tbg wrote,

"Mapman, from your speakers all sound waves travel the same speed. From your source and preamp to the amp each stage of amplification passes different speeds, except in Roger’s X-10 MkIII amp."

How does the amp know what the correct relationship of velocities of frequencies within the signal is supposed to be? From what you just said it sounds like the damage has already been done by the time the signal gets to the amplifier. I.e., that the velocities of the frequencies within the signal are already out of synch. Thus, the amplifier - if it is maintaining the "correct velocity" of all frequencies within the signal will simply *keep the already out-of-synch relationship of velocities in tact* whilst amplifying the out-of-synch signal, no?