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In Reply to: RE: I was speaking about posted by airtime on August 12, 2021 at 10:20:28
4300 ohms matches up with a el34. The KT66 needs a higher impedance.
"Honestly, I'm thinking of replacing the driver board and going back to the stock version with a 7643 driver tube."
OK, now you've got me confused. The original ST 70 used a 7199.
I assume the "original" aftermarket driver board used a 7643?
Tre'
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