#1
Hi, my peavey xxx ii(2) requires 4 12ax7-a tubes as labeled on the amp. But the specs online reads to have 12ax7. Does have to be specifically 12ax7-a? Or does it not matter at all
#2
No difference. 12AX7 is a 12AX7.
I'm just a kickin' and a gougin' in the mud and the blood and the beer.
#3
Quote by dementiacaptain
No difference. 12AX7 is a 12AX7.


Unless it's an ECC83. In which case it's still a 12AX7
#4
a 12ax7 goes by quite a few names, some versions are identical some are slightly different (like lower noise versions).

i have seen 12ax7 go by
7025
12ax7a
ecc83
ecc803
ecc83s

even tubes like 12at7, 12ay7 and 5751 are a slightly lower gain tubes that are (in most all situations) perfectly acceptable replacements for 12ax7.
punk isn't dead, it's always smelled that way.

"A perfection of means, and confusion of aims, seems to be our main problem."
-ae