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CV4003 vs 12au7 are they comparable?


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A quick search found this  -  12AU7 and CV4003 are two different names for the same tube. 12AU7 is the American designation and CV4003 is the British designation. ECC82 is the European designation. There are also many variations with other names, such as the Amperex 7316 or the Mullard M8136, that are basically the same tube.

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