Finally used these Mullard reissue EL34s in a SE UL amp with 3.5K 10W OPTs and external PS. Rec tube is a Sylvania 5U4GB and driver tube a Tung-Sol ECC803S gold pin but any 12A*7 can be rolled here. Also 6L6 and KT88s can be rolled as power tubes. Power tranni is an over specced Hammond and the amp steel chassis is Hammond also.
http://retro-thermionic.blogspot.com/2024/11/perspective-el34-single-end-ultra.html
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