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| :I know that substitution is possible in some cases. I don't have 6BA6 but a lot of 6AU6A. : :I have a unknown AM/FM/MPX tuner made in Japan and "High fidelity" written on face. I want to change 2 weak 6BA6. Will it work? Will I have to "tune" something? : :Thank you. |
| 6AU6A instead of 6BA6? | |
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