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Why does it take so many hours to brea in arc preamps and amps?

I recently purchased a like new ARC 5 SE pre amp.  The unit had less than 200 hours on it.  Everything I have read states that ARC preamps take up to 600 hours to fully break in.  Why is this so and what improvements can I expect to hear as the unit accrues hours?
ewah

Showing 1 response by gpgr4blu

gpgr4blu
1,077 posts
 
I have yet to hear a tube amp that sounds as good after 5 minutes than it does after 1 hour let alone 4 hours. That I know for sure.
Currently explainable science be damned----and I love science.

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