Telefunken AC701K Tube.
Tested with Funke W20 tube tester. Emission Ia=2,4 mA , new is 2,1 mA. Then soldered in the Neumann M49 microphone and tested after 24 hours of power. Tube ringing, therefore the tube is not suitable for use in a tube condenser microphone.
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| Listed | 21 hours ago |
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| Condition | Fair (Used) Fair condition gear should function but will show noticeable cosmetic damage or other issues.Learn more |
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