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I'm a professional musician, been playing for more than 25 years and I do know and understand sound...


Now where have i heard this one before.
No, don't tell me, it will come to me.
Oh ya, from every person who has never done an honest blind test.
Now i remember.

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if you don't have the knowledge or the ears don't assume that is impossible to hear a difference in amps


There's no such thing as 'golden ears', sorry.
Another proven myth.

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You see, my testing was done on a VERY controlled enviroment.


By all means, lay out your experimental protocols for me. I would love to read about it. I have, oh, a little experience in this regard.

Have you tried doing some more up to date reading on psychoacoustic audio research? The stuff from 25 years ago is rather out of date. I suggest you start at the Harmon Kardon site, look for their white papers section.
Dr. Toole has published some very detailed stuff. I really don't know if he's a musician, but don't hold it against him eh.

"Those who preach the myths of audio are ignorant of truth."