Denizen
Verified Member

Posts: 41
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You can convert a balanced connector to an unbalanced one by shorting pin #3 to pin #1 on the XLR connector. You can do this directly or you can add a small value resistor, say a 100 ohms. Or experiment with different values this will allow you to use your tube stage.
Are there balanced tube stage schematics out there, probably, I cannot comment on a schematic I have not seen. Have you tried Epanarama.net they have numerous audio schematics and links to other sites. Steve's ZTPre is a balanced pre-amp, and he may or may not publish the schematic for it. But, I'm sure youl find something.
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