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Questions about tubes and gear that glows. FAQ

Yes, the tube is the 12sc7.

I've posted the link below to the Ultra 4A specs on the Mapletreeaudio.com website. I guess this is an unusal tube to use in an audio circuit. I do not have enough knowledge of tube circuits to know why this is a good or bad thing. Nonetheless, given the responses so far, I'm assuming that the 12sc7 is not used commonly in audio and that no one will really have any favorites brands to recommend. Thanks anyway.




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