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In Reply to: RE: Eico HF 20 indirectly heated Rectifier substitute, any possibility? posted by jasonheatley on May 6, 2018 at 18:12:00:
Although the EICO HF-20 has cathode-biased 6L6GBs, then idle bias current will adjust somewhat to the higher B+. But, this may lead to shorter 6L6GB life, not longer --- provided by what little maybe contributed from the GZ34 slow start-up.
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- A GZ34 will make higher B+ than the 5U4GB - FenderLover 05/7/1806:41:52 05/7/18 (0)
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