Hi guys
Im not a novice when it comes to valves but im seeking a bit of knowledge before pulling the trigger on some new 12ax7's for my rig.
I have a JMP-1 and a Peavey Classic 60/60 Stereo Valve Power Amp that I've been gigging the rig pretty constantly for the last couple of years and its starting to get noisy.
I put a new set of 6l6's in the peavey when i got it but never touched the 12ax7's in there coz they were fine at the time.
As Im not sure wether its the valves in the marshall or the peavey that are starting to show their age, should i bite the bullet and replace the lot ?

What valves should i go for JJ, TAD, Genalex or Tung Sol?
Wotcha fink?
Cheers