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Rectifier differences

I recently bought a re-issue pair of 5AR4 tubes to replace the NOS 5U4 tubes in my Cary SLI-80.
Comparing the quality of sound of the two, I need more time to judge, burn in of new tubes and all.

What I did notice is the volume. With the AR's I have to set the volume about six notches higher to achieve the same level.
Very familiar with my system and room so it is not my imagination.
Is there an electrical reason why this would be?
Thanks in advance.


Marlin


Without music what is there?


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Topic - Rectifier differences - marlin 13:11:11 04/05/21 (6)

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