Re: 807 power amp #1
The phase splitter as drawn looks peculiar because it does not have any DC return path for the 6SN7 grids, they are just floating.
If the coupling capacitor between the EBC33 anode and the 6SN7 grid is removed and replaced with a direct connection, the problem is solved.
This minor change gives a phase splitter circuit that is fundamentally similar to the famous Mullard 20W amplifier or indeed the Mullard 5/10.
Ron
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