Telefunken ECC83 12AX7 Preamp Tube FAIR W. Germany

Description

Tele <> Smooth Plate 12AX7, labeled for The Fisher.
Tests good, but on the low side at 1000/1000 where 875 is good
on a calibrated Hickok 539-B.
Listening tested on a Maxi-preamp 2 noise tester for excessive noise and microphonics.
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