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average life expectancy of a preamp tube


Mike LX-R

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by any unit of measure you may know, how long does a preamp tube last?

 

2-4 hours per tube at bedroom volumes.

4-8 hours at stage volume.

 

 

so a 5150II/6505+ preamp tubes would last up to 20 hours at home.

 

 

i am 100% sure i am right. i am posting this on the internet, and you can't lie on the internet.

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I usually change mine out after 2-3 years. It doesn't actually go bad on me, but after changing them, I can surely hear the difference!

 

 

i think this is what's going on. one hasn't completely failed but I'm hearing issues.

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I don't know if this is accurate or not but I had an electronic (and nuclear) engineer friend who was a real tube enthusiast tell me that they take a very long time to wear out and that he recommended changing them only when they go microphonic (even then he said you could use them in the P.I. slot) or break.

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I would also like to add, JJ's are pieces of {censored}. Especially if you get them from Eurotubes. Every preamp tube I've ever had fail was a supposedly new tube from them.

 

 

hm. this might be my exact problem... JJ and Eurotubes.

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