ECC82 / 12AU7 / 5814 Dual Triode

ECC82 / 12AU7 / 5814 Dual Triode

The ECC82 or 12AU7 is a miniature 9-pin low gain (17mu) 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 CV491 and 5814. It can be used to replace the higher gain ECC83 / 12AX7 in V1 or V2 of a guitar preamp in order to reduce gain, and increase clean headroom.

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