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12AX7, MULLARD,  ECC83, mC1 B6K,  BLACKBURN MANUFACTURED, NOVEMBER 1956
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12AX7, MULLARD,  ECC83, mC1 B6K,  BLACKBURN MANUFACTURED, NOVEMBER 1956 12AX7, MULLARD,  ECC83, mC1 B6K,  BLACKBURN MANUFACTURED, NOVEMBER 1956 12AX7, MULLARD,  ECC83, mC1 B6K,  BLACKBURN MANUFACTURED, NOVEMBER 1956

12AX7, MULLARD, ECC83, mC1 B6K, BLACKBURN MANUFACTURED, NOVEMBER 1956

  • £125.00

Only 1 left!

ECC83, MULLARD,  mC1 B6K,  BLACKBURN MANUFACTURED, NOVEMBER 1956

On offer today we have a Mullard white print 12AX7 / ECC83 made at the BLACKBURN plant and carrying an mC1 coding with a  date code for November 1956.

For Va = 250 V Vg = -2.0V against a nominal specification of anode current Ia = 1.2 mA and mutual conductance gm = 1.6 mA/V, the following results were obtained:-

A1 Ia = 1.6 mA gm = 1.5 mA/V

A2 Ia = 1.4 mA gm = 1.6 mA/V

As you can appreciate this represents good matching of each triode section within the envelope and a device showing superb emission.


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