12-12-2017, 06:26 AM
Russ;
What about trying a 3Q4 in place of the 3S4, they appear to have the same pinout, and the B+ rating is higher on the 3Q4? That way you can use the same adapter, however I think that the 3Q4 is basically the same tube as a 3V4 electrically.
Regards
Arran
What about trying a 3Q4 in place of the 3S4, they appear to have the same pinout, and the B+ rating is higher on the 3Q4? That way you can use the same adapter, however I think that the 3Q4 is basically the same tube as a 3V4 electrically.
Regards
Arran