#1
I have a Randall RG-50TC and I wanted to replace the tube to get rid of high pitched noise coming from it.

I wanted to buy 4 Electro-Harmonix 12AX7 and 2 JJ E34L (EL34) for it an was wondering... Will they work with my amp? and will they sound good for metal?
#2
if your amp takes 12ax7's and el34's then it should work fine. you may need to rebias it if the amp isn't fixed bias.
check the tubes thread though.
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