I have a pre-amplifier that can use either 6 SN7 or 12SN7 ( with jumpers on the circuit board). The manufacturer suggests there is little sonic difference between the two ( within same branding and era etc). Has anyone direct experience with these two tubes?
The 6 and 12 volt heater versions sound the same. You can probably pay less for the 12 volt version because they aren't as popular. Same when I needed a quad set of 12V6's for one of my tube amps. They were half the price of the 6V6's.
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