In Reply to: Replacement of 5Z4P tube posted by Tubers on June 3, 2012 at 10:38:37:
The 6L6s are the easy part. Get some Russian 6П3С-E (6p3s-e3) stock from a reliable vendor, like AA sponsor Jim McShane.
The rectifier is indirectly heated, but seems to resemble the 5Y3. U.S. made types of that character are the 6087/5Y3WGTB and the 6106.
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Topic - Replacement of 5Z4P tube - Tubers 10:38:37 06/03/12 (3)