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

break in..........

break out........

burn in............

burn out..........

4 variables can lead to many combinations

and then we have ............................. warm up.

I have never come across a situation where the gear, and listener/s did not benefit from some warm up.

George,

Your posts speak for themselves. Knowledge as thin as a molecule of Graphene and reason one thousandth the thickness of that.

All of your challenges have fallen flat. Then the rapid degradation of your defensive retreat. What’s next, "Nuh-uh. You are!"

Dave

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.