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12at7 with 12ax7 tubes

Greetings and Happy Easter,

This post has probably been answered before at some point. I have a Symphonies pre V2 that uses three 12ax7 tubes along with a 6x4 rectifier. I wanted to know if I could use a pair of 12at7 tubes for the output section with no ill effects. Thanks to all and good listening.
south43
sebrof's avatar
sebrof
837 posts
 
This is good to know.
I have an amp coming that uses 12AX7s. I do have some better 12AT7s that I'll investigate dropping in. I didn't know that ATs and AXs were interchangeable. (I do have 5751s coming as well).
south43 OP
386 posts
 
Sebrof let us know what you think when you get them installed.
sebrof's avatar
sebrof
837 posts
 
Just got the amp and tubes yesterday. I'm breaking in the power tubes, the 5751, and amp before I start rolling. I'll try to remember to post back in a few days.
doak
199 posts
 
12AT7 and 12AX7 are NOT "interchangable."
sebrof's avatar
sebrof
837 posts
 
Thanks Doak.
So much for that experiment.
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