Carlos269, one of my undergraduate majors was Physics, but my Ph.D. is in political science.
I would urge you to listen to the H-Cat if you have a chance and would welcome you were you to come by.
Roger is very sincere guy and has come about a circuit that works, although it has been evolving the last six years. Although I have known Roger since the early 70s, it was only about six years ago that I learned he was back in audio. I agreed to give a listen to his new line stage. I was impressed and bought it. Relative to the unit I have today, it could not compete although it got TAS' Golden Ear award. There was an amp even then but only a very few were made. A production version of an exceptional amp is only recently available. If the line stage is very, very good, the amp is unbelievable and renders the goal of his electronics, a holographic sound stage.
Over the years Roger has repeatedly attempted to tell me how this was accomplished. Since the product sounded so good, I put little stake in my understanding about what was going on. Remember that Roger's innovation is his claim to fame. He does want to answer question, but not to divulge proprietary information.
I had an early linestage with no WTC, but although I wish it were automatic like self-focusing cameras, I cannot live without what I get when it is on the money, especially now that I have the amp. This experience is why I initially posted here and only to suggest that people give a listen to H-Cat.
I have no investment in his company nor have I ever profited from selling either the line stage or the amp, although I think I strongly influenced many to buy one.
H-Cat is not a scam, although I do know of people who did not like it or perhaps who would not deal with the WTC or Roger's suggestions about grounding only the line stage.
Publul57, it maybe that Lotus Group will have the P-12R X7 line stage. The local dealer who did demonstrations last year is now in China, I think.
Goldeneraguy, I suggest that you have chosen a correct path.