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12AX7WA, Special Quality ECC83, Mullard,  10M Series, i63 B7E5 Print, Blackburn  Manufactured, May 1967
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12AX7WA, Special Quality ECC83, Mullard,  10M Series, i63 B7E5 Print, Blackburn  Manufactured, May 1967 12AX7WA, Special Quality ECC83, Mullard,  10M Series, i63 B7E5 Print, Blackburn  Manufactured, May 1967 12AX7WA, Special Quality ECC83, Mullard,  10M Series, i63 B7E5 Print, Blackburn  Manufactured, May 1967

12AX7WA, Special Quality ECC83, Mullard, 10M Series, i63 B7E5 Print, Blackburn Manufactured, May 1967

  • £90.00

Only 1 left!

12AX7WA, Special Quality ECC83, Mullard,  10M Series, i63 B7E5 Print, Blackburn  Manufactured, May 1967

On offer today we have a Mullard yellow print ECC83 made at the Blackburn plant and carrying a date code for April 1963.

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 = 1.1 mA gm = 1.6 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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