well, i'm new to tubes, but i have a question...what is the difference between 12AU7 and 12AX7?...can i replace the U with the X?...thanx
Difference between 12AU7 and 12AU7A
Anyone out there know what the difference between these two tubes is? All 9 pin mini dual triodes suppossedly can be rolled into the voltage amp stage of my Llano Trinity 300.