Dunno...I’ve not had to replace many EL84 power tubes...you’ve heard my recordings...How do you get years out of an EL84? Mine go about 30-40 hours, which is usually inside a year with multiple amps.
A set of JJs lasted me like 6 years in my 18watt...gigging, and studio time. I picked up a few of the tubes I linked above to replace them...not really “needed”, but an improvement. I put some in my TT, and same thing. Both are running happily now.(more clean headroom)
The Classic 30 that I’ve inherited could definitely use a new set of power tubes....I don’t know if I’d go as far as the Sovteks....JJs maybe...maybe I’d go for the Sovteks...obviously I’m torn.
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