eth2 Posted January 30, 2021 Share Posted January 30, 2021 Is. the CV4003 interchangeable with a 12au7? I have a VAC amp with four CV4003’s. One blew. Can I use a 12au7 until I get a replacement? 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted January 30, 2021 Share Posted January 30, 2021 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. 1 Quote Link to comment Share on other sites More sharing options...
eth2 Posted January 30, 2021 Author Share Posted January 30, 2021 Thank you, moray! 1 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 30, 2021 Share Posted January 30, 2021 We thought you had been kidnapped! 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted January 30, 2021 Share Posted January 30, 2021 I was for 37 days, there were in fact three separate abductions. Well I had three hospital visits over six weeks. I am not over this but I do feel a lot better. I had a stroke and got a large clot, they tell me it's better than a tee-shirt. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 30, 2021 Share Posted January 30, 2021 Not you, eth! Quote Link to comment Share on other sites More sharing options...
Schu Posted January 31, 2021 Share Posted January 31, 2021 is it a stereo amp? would it be prudent to change all tubes (stereo) or both tubes (mono) to12au7? Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 31, 2021 Share Posted January 31, 2021 Depends on where they are in the circuit wouldn’t you think? Quote Link to comment Share on other sites More sharing options...
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