Quote:
Originally Posted by old_coot88
Yup, the 80/5Y3 lineage were very reliable. Don't forget the 5Y3's lesser-known sibling, 5Y4. Same octal tube but different pinout.
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My favorite would be a 5V4, slower heating, easier on electrolytics
The newer generation 6X5's were a lot more reliable. The 6X5G's seemed to be the real problem, especially in the pre-war Zeniths.
