mopardave Posted April 8, 2023 Share Posted April 8, 2023 I have a MapleTree phone pre amp and have had an issue with the tubes that came with it. It uses 2/ JAN CRC-12SC7 can type and 1/RCA 12sn7 glass. I get noise out of one or the other of the cans and have bought several sets with same results. Would like to find a better replacement. Would like some opinions on what tubes to buy to replace these with. I have switched the cans from one side to the other and the noise always follows the tube. I finally found a good pair and now one of those is noisy. Looking for quite good sounding tubes. Quote Link to comment Share on other sites More sharing options...
mopardave Posted April 10, 2023 Author Share Posted April 10, 2023 I see i posted this a while back. Gettin old. I did buy and try the 12sc7gt. Did not like them. I have since ordered some more replacement Jan and Marconi to try. I again switched tubes from one side to the other and so far no noise, go figure. 1 Quote Link to comment Share on other sites More sharing options...
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