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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

Showing 4 responses by sebrof

sebrof's avatar
sebrof
837 posts
 
"The 12AT7 is interchangable with the 12AX7, but has slightly more than 30% less gain"

Rodman - I've heard that about the 12AX7 vs. the 5751, but never the 12AT7. Are you sure you're on track with this?
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).
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.
sebrof's avatar
sebrof
837 posts
 
Thanks Doak.
So much for that experiment.
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