NowYou'rePlayingWithPower
Well-known member
I would say if the old tubes test good, use them. Their age doesn't matter.
I have a few amps that I don't crank up that high often, the tubes could last forever like that.
I agree, I was more or less just wanting to compare them to the NOS and see how well they've managed to hold up. They have a lot of miles on them, though (guessing 1.5-2k+ hours). It will be interesting to see.