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12AU7 / ECC82

12AU7 Tubes

About 12AU7 Tube

12AU7 is a medium gain dual triode. Due to the combination of low grid-plate capacitance and medium gain, it is suited for use in audio voltage amplifier with an extended frequency range.

5814, 5963 and ECC82

12AU7 was very popular and a number of variations were made. The 5814A is a military/industrial grade 12AU7 with low noise and high-reliability spec. 5963 is a 12AU7 with special long life cathode meant for use in vacuum tube computers. ECC82 is the European numbering for 12AU7.