Quote Originally Posted by poppachubby
Sorry Bill, little to none. Nonsense? Not really. Extreme linearity especially with triode designs is the whole appeal of a class A tube amp. Any tube amp that a knowledgable enthusiast would consider, will most certainly have properly implemented NFB. I doubt if even the most golden eared audiophile could hear any distortion in the well made designs.

NFB in Class A isn't nonsense. Nonsense is thinking that they are all implemented properly or the same. This is what sets good apart from great.
"Linear" is not the same as "zero distortion", however.