Yep, I had the same increasingly loud squeal with no input on my Gries 5.Originally Posted by Gutmann
tap, tap with a pencil eraser & lo & behold the 12AX7 was obviously microphonic. I changed that & problem solved.
Yep, I had the same increasingly loud squeal with no input on my Gries 5.Originally Posted by Gutmann
tap, tap with a pencil eraser & lo & behold the 12AX7 was obviously microphonic. I changed that & problem solved.
I pick a moon dog.