This valve was designed for HIFI
ID: 422691
This article refers to the component: To the tube/semiconductor
This valve was designed for HIFI
24.Aug.17 13:19
1548
From some information found on internet, this valve was one of the last development in audio + HIFI, may be in 1965 / 1966. So it was not spreadly used. Was capable of a 10W to 20W audio output in push-pull.
It's similar to the 7868.
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