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relationship between rec. and the other tubes?

New to tubes, in my pre I have (1) 5z4p rec tube and (2) 12at7 tubes. What is the relationship between them? When I change diff. Brand 12at7's it affects the low and high and mids. Not sure what the rec. Tube does? Tyring to get a handle on this. Any help is appreated! Thanks.
stanman

Showing 1 response by armstrod

armstrod
601 posts
 
Rectifiers can definitely alter the sound, but as always, it's system and circuit dependent. I agree that the 12AT7s will have the most effect.

My 6SN7 preamp is also tube rectified, and a good NOS 5AR4 made a noticeable difference over the new production 5AR4s I tried.

David
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