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As far as I know a 5V3 is just a 5U4 with a 4-pin base...it probably really needed 2 5V3's initially.
Correction...maybe it is a 5Z3 that is the same as a 5U4, I know there is a 4-pin rectifier tube the same internally as a 5U4 but maybe I should have double checked the tube manual before I commented.
Last edited by Chad Hauris; 09-19-2005 at 12:12 PM.
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