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Vacuum Tube Break-in

Is there such a thing as tube break-in? I been laying with many tubes in about 20 tube amps for 40 years and never heard a difference in a new tube vs same tube with 50 hours use. I always bought and used NOS tubes, not used. I believe if a difference is heard with break-in, it is the placebo effect.

fisher_400

Showing 2 responses by carlsbad

carlsbad's avatar
carlsbad
1,551 posts
 

I think burn-in is greatly exaggerated, especially in passive, not electronic equipment.  But tubes get hot and metals change when they glow.  I do believe tube burnin is significant...it isn't always positive.  

I put in a set of Russian tubes last week and they sounded best 10 minutes after I installed them.  Still good but I liked them best then.

Jerry

carlsbad's avatar
carlsbad
1,551 posts
 

It it’s on youtube, it must be factual.  you have posted a few opinions.  Beware of opinions.  And especially be aware of opinions from people who have something to gain from them.

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