Tubes Asylum

Posted by jedrider (A) on February 23, 2023 at 10:29:42

In Reply to: RE: Update No. 1 on my EL34 recommendations post below posted by JoshT on February 21, 2023 at 07:19:19

The manual says set EL34 bias between 25ma-50ma. As I can detect no significant difference in sound between 25ma and 50ma bias, I set them to roughly 25ma.

I had a bad socket that was blowing tubes and I finally located and fixed that. I've had some tubes go bad in other sockets which I will attribute to the tubes themselves.

I now have a mixture of all sorts of tubes among the four survivors that seem to be lasting forever. I can't explain why some tubes last and others don't though. I'm happy with the sound even as I replaced all the small signal tubes throughout the chain which made a huge difference.

Edits: 02/23/23