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Tung-Sol 12AT7/ECC81 Preamp Electron Tube
![12AT7/ECC81 Preamp Electron Tube](http://cdn.long-mcquade.com/files/214180/lg_de9d3389e31e843f185a77d9ece7cd9e.jpg)
The 12AT7 combines two high transconductance triodes in a 9-pin miniature construction. Its low-capacitance and high ratio of plate current to transconductance adapt it to use as a high frequency combined oscillator and mixer or as a grounded grid radio frequency amplifier.
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