ECC81 / 12AT7 Dual Triode

ECC81 / 12AT7 Dual Triode

The ECC81 or 12AT7 is a miniature 9-pin medium gain (60mu) dual triode tube. It has a center-tapped heater filament so it can be used in either 6.3v 300mA or 12.6V 150mA heater circuits. Other equivalent tubes are CV4024 and 6201. This tube is often used in reverb-driver, and phase-inverter preamp sections.

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