ECC83 / 12AX7. TESTS 100%.AS GOOD OR BETTER THAN NEW TUBE. 100%. PRICE IS FOR ONE PIECE. ( 1 Tube ).
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I63 Code in the Glass. ECC83 12AX7 Valve Tube. Mullard Blackburn, Made in Great Britain. Short Grey Plates, Halo Getter.
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Matched pair of Mullard ECC83's. Short ribbed plate, one white and one yellow print. White print manufacturer code I61 B1L2 - 1st iteration, Blackburn plant, 2nd week of Dec 1961.
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The print date is B0H - Blackburn, England, from April 1960. They read slightly low on the plate current, but transconductance is spot on, and also balanced between the two triodes. They are good tubes.
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ECC83 / 12AX7. These tubes test less than 100% on one or both anodes but are perfectly good and have plenty of life left in them. PRICE IS FOR ONE PIECE. ( 1 Tube ). 75 - 99 %.
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MULLARD 12AT7WA NOS UK MADE Valve Tube. In most cases will replace the hard to find and expensive 12AX7/ECC83. Has slightly lower gain which may not even be noticed. Will be AVO tested for balance between halves and matched in pairs or quads.
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A used Mullard ECC83 long plate valve in excellent working order. It has the very early foil getter and the long 17mm plates. The date is believed to be 1955 because all of the other valves in the record player which it was removed from were dated March 1955.
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Mullard Holland Heerlen ECC83, 12AX7, Long Plate, Square Getter mC ▶️9B AVO TEST.
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