lespaul678
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Thank you for your concern. I appreciate it. I do have the exact replacement tubes, but you did not answer my question. You're supposed to bias an amp after replacing the tubes and I do not see the number in the user manual for what to set the bias to. I need that number for the HD100 Valve, Spider, Bogner amp head.
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I have a Line 6, Bogner, Spider Valve HD100 and I'm replacing the tubes on it. I need advice on biasing the amp after replacing the tubes. I didn't see anything in the manual about what to set the bias to. Does anyone know?