Ruby 12AT7C HG


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Ruby 12AT7C HG high grade.

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Ruby 12AT7C HG

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The Ruby 12AT7 HG is a high grade select low noise 12AT7 made by the Shuguang factory in China. Excellent current production 12AT7/ECC81, it's got less gain than a current 12AX7 with a gain factor of 60 versus 100 for a 12AX7.

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