converting BAL to UNBAL using tubes and without transformers

[revintage]

And, if the input is referenced to ground, would it work better if connecting the cathode resistor to a negative supply, say 12V?

What do you think about reading the whole thread😉? It has already been dealt with.

Remember KISS!

 

[kenpeter]

Three caps in the signalpath, feedback, SRPP. Those ingredients says NoNo to me😉 .

Its not an SRPP despite a similar look at first glance. its cascode
plate follower, driving a cathode follower. With some sort weidro
bridge/mixer. Nothing about it works like typical SRPP except for
Broskie style power supply rejection. Its about as alien to SRPP
as any circuit ever... And was surely intercepted in one of those
moments I forgot the aluminum foil party hat.

I don't have a problem with local feedback, where the phase
shift can be well controlled.