Believe it or not 250 watts can come from a quad of EL34s


If the EL34s are run in ultr-pentode mode which is right at the edge of there specs 800v on the plate and 450v on the screen grid than up to 125watts per pair is possible. I had a Bogen KO100 that did 100 watts from a pair and sounded very good.

If you search the web enough there is a person who milked the 125 watts out of a pair.


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