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really? would have guessed that good old tube amps are widely known. ^^
guess i am to deep in my audio bubble.

Yea..weird. while I am not musically inclined, I have been surrounded by musicians most of my life, especially DJ/producers...and I have never seen that so I had to know.

prob. not so common in production, more for the people who enjoy to listen. as tubes are known to "color" the music. and i guess as musician you want more of a refernce style audio.