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PPP Mono Power Amp 140W (G. Haas, 4xKT88 in use) why only short Life Time ?
PPP Mono Power Amp 140W (G. Haas, 4xKT88 in use) why only short Life Time ?
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Old 18th January 2019, 04:37 PM   #11
banat is offline banat  Serbia
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Join Date: Dec 2009
Location: near Belgrade
No , claimed output power is 140W per channel , output stage is (PPP) or circlotron configured where four KT88 works in quasi pentode mode and biased very close to B class ,
German magazine Elrad published in 89 conceptually very similar 120W amp , but with self biased OPS and 6x EL34 .Glasboden-Amp mit 6xE34L, von Falk Eichmann
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