If the load is of high enough impedance, you might get by without the push-pull pair.
So I might try first without Q72,Q73, drive your tube rig over a twisted wire pair (or coax)
from the junction between Q71-collector and R75.?
Remember that we had earlier shorted across those two diodes.
Others are more than welcome to chime in, tell us why that won't work.
At least if this circuit smokes, won't be an expensive loss.
Jerry
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On Wed, Dec 18, 2019 at 10:05 AM, Don Richards wrote:
Jerry
I like the idea of the ubitx audio stage. I should have all the parts on hand to give that a try.?
Thanks!
73 Don ve3ids
