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Showing 1 of 119 conversations about:
Alejandro508
28
May 10, 2017
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Doe anyone have any idea if a 12BH7 could be dropped in for the 6N4?
Gugliermo
1317
May 10, 2017
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Alejandro508One is 12 volt and the other 6 volt, so no can do.
Alfa24V
3
May 30, 2017
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Alejandro508You can use a 12BH7 in place of the 6N4. 6N4 is just the Chinese military designation for the 12AX7, and while the 12BH7 draws more current than the 12AX7, this amp can handle it.
Gugliermo
1317
May 30, 2017
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Alfa24VI stand corrected, I've been dealing with tubes since 1963 (American and European) and have never heard of a 6 volt designation used for a 12 volt tube. Apparently the Chinese do. Thanks for pointing this out.
Alfa24V
3
May 30, 2017
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GugliermoNo worries. The 12AX7 can be run off 6V or 12V so I can see what the thought process was.
It should be noted the preamp socket on this amp actually supplies 12V instead of 6V like most other headphone amps. So you can't use 6V-only tubes like 6DJ8 or 6FQ7. You must use their 12V equivalent instead (like 12FQ7) or a dual-voltage tube like the 12AX7 and 12BH7. The good news is 12V-only tubes are often cheaper than their 6V-only equivalents but sound the same.
It should be noted the preamp socket on this amp actually supplies 12V instead of 6V like most other headphone amps. So you can't use 6V-only tubes like 6DJ8 or 6FQ7. You must use their 12V equivalent instead (like 12FQ7) or a dual-voltage tube like the 12AX7 and 12BH7. The good news is 12V-only tubes are often cheaper than their 6V-only equivalents but sound the same.
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