I am going to have my 5150 and possibly my Cobra retubed this summer. The 5150 is also going to get modded by Jerry at FJAmods and get the clarity/bias mod. But i was wondering what kind of tubes i should get put in the 5150 for sure and maybe the Cobra? If you dont know i play alot of metal/punk etc if that matters. My tube knowledge is pretty limited, I have heard that JJ's are good but further help would be awesome. Thanks

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-Will