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2XNOS 12AX7=ECC83 Telefunken, <> Bottom, West Germany
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2XNOS 12AX7=ECC83 Telefunken, <> Bottom, West Germany
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2XNOS 12AX7=ECC83 Telefunken, Bottom, Made in Berlin, Germany. This is the legendary ECC83 / 12AX7 Telefunken smooth plate with diamond bottom. Having a very smooth response with articulated bass, this tube is one of the most desirable 12AX7 variants available. Etched code on one of the tubes: B9014001 . The other code is not visible anymore. Made in Berlin Factory on 9 October 1974 . Tested on Amplitrex AT1000 Tube Tester. Test Results (see attached Test Data) : Mutual Conductance (uMhos): Tube 1) 1600 and 1700; Tube 2) 1600 and 1600. Minimum Value: 1040. Plate Current (mA): Tube 1) 1.4 and 1.4; Tube 2) 1.1 and 1.2 Minimum Value: 0.78. Items sold "As-Is." I will ship worldwide using Registered Article Service from Singapore Post.
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