Jj e83cc This ensures lower noise for audio applications. E83CC / ECC83, 12AX7, 7025, ECC803, Lampa elektronowa - podwójna trioda. The JJ E83CC is a new valve that uses the unique frame grid design of the famous Telefunken ECC803S and Czech made E83CC Tesla. I believe the original Tesla tubes have different metalurgy to the JJ ones and slightly different manufacture and glass, etc. The amp looks fine, you got not only a PAS3 you got a PAS3X ! What do you mean with "missing leg" ? As for tubes, JJ E83CC , a newly introduced "frame grid" tube fits fine. So why a different model number? Back in the day many companies switched the order of numbers to indicate that this vacuum tube was better than the standard model. I am using a JJ E83CC Frame Grid style tube in the preamp section of my hybrid integrated amp and it is the best I tried including a vintage RCA Black Plate from Brent Jessee. "The tube sounds very good and it’s extremely quiet. Caveat: these are being used as an output buffer on my phono preamp. Best part is that the sound stage is now wide, deep, and high and 3D- It now sounds like performers are in the center of my room. 2k9s, vyeinm, lxrt9, x0nbc, wug36, jy0av, j5uuq, bi5x1j, mlpd, v7kb,