Quote:
Originally Posted by frankie c  My vote is to replace it with a TELEFUNKEN ECC83/12ax7 ...
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...bad idea...the ECC83/12ax7 (as well as the 12at7, 12au7, 12ay7 variations) are not compatible with the E88CC/6922/6DJ8...same number of pins but different pinout and circuit voltage design...
...the Rode mics were designed to utilize the 6922 and the compatible variations are 6DJ8/ECC88/E88CC/CCa
(see link:
The 6DJ8 / ECC88 / 6922 Tube)
...the 12ax7 is compatible with 12at7/12au7/12ay7 variations with various gain ratings
(see link:
The 12AT7 / ECC81 Tube)
...the Tele 12ax7 are highly praised for use in guitar amplifier circuits, while the 6072 (high-grade 12ay7) are preferred in tube microphones that utilize the 12at7 type tubes...