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ECC82, 12AU7, CV491, CV4003, B329, M8136, 7193, SMALL SIGNAL, B9A

The ECC82 was designed as a general-purpose medium mu twin triode. Special quality versions were also produced, for the military bearing the notation CV4003 and the anti-microphonic and matched section version E182CC was also supplied for instrumentation usage.

The ECC82 has a quoted amplification factor of 17 which is much lower than that for the pin compatible ECC83 which is rated at 100.  The glass tube envelope is approximately 20mm in diameter and excluding the B9A button base pins, is approximately 50mm in height.

The ECC82 found use in many classic hifi amplifiers and guitar amplifiers of the golden valve era and many current devices have them lurking beneath their covers.






ecc82 12au7 cv4003 mullard