The JJ ECC82 replaces 12AU7 tube types. The ECC82 tube type is equivalent to the North American 12AU7 tube and can be used in any 12AU7 or ECC82 circuit. RF double triode, 9 pin valve low gain. Radio frequency twin triode tube from Edicron intended for oscillator or amplifier applications such as phase splitter or cathode follower. Its low microphony make it particularly suited to low level audio applications. ECC82 is 12AU7 medium gain preamplifying double triode.