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RE: Can I build an amp with any of these?

Posted by Paul Barker (A) on March 17, 2022 at 22:40:57

In Reply to: Can I build an amp with any of these? posted by Paul Ebert on March 14, 2022 at 15:03:17:

oddly the 811 data sheet shows higher plate dissipation than the 811a.

the only way to use it in audio is positive grid bias so you would need low impedance reasonable power driver direct coupled. Not a newby project.

Hold on the them for a while as the valve world is in turmoil with the Russian conflict. When it settles possibly it may, and sanctions lifted perhaps the Russians will stop playing tit for tat and lift valve export ban. Also Ukrain was price best supplier of Russian valves, may not be any left after the conflict.

Hang tough and youre valves will sell better. A lot of ham's get their replacements from Russia/Ukrain so prices will rocket of youre valves.

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