New stuff was found in trash, so salvaged power amplifier from old tape recorder. It is made with with dual EL84 (6BQ5, 6ÐŸ14ÐŸ) tubes.
One funny thing about this PCB. The tubes and most of components are made same year and same month as I was born. So they are as old as I am.
Also, I break apart few old TVs…
… and removed nice set of power pentodes: 6ÐŸ36Ð¡, 6ÐŸ44Ð¡, 6ÐŸ45Ð¡. They are quite powerful, and it is possible to build some audio tube amps from them. Or radio transmitter!