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Paul, I clearly have no idea; I am purely fishing in here.

Regarding use of feedback in my buffer there was an interesting experience with it. Among the buffers that I tried there was two that used feedback: one was a an exact replica of Melquiades input stage with a loop to kill it’s gain and another was a current-biased anode follower. Both feedback buffers sounded worth among all other buffers that I tried. 

Interesting that when I used the Melquiades input stage (with no feedback) as a buffer and reduced a sensitivity of the Melquiades power amp then I had a certain Result (not perfect result but just a Result). However, when I removed the voltage devider form the power amp and reduced the buffer’s gain via introducing of a feedback to the buffer then that Result was divided by 1000 quality-wise. The sound was completely killed and I did not even anticipated how bad it would be.

I have to note that I have no opinion of agenda about benefits of feedback and do know well performing equipment that use feedback and sound perfectly fine. However in my case the feedback was a complete sonic humiliation…

The caT

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