RARE MATCHED PAIR OF MULLARD ECC83 

I61 B0E1 AND I61 B2I4 CODES FROM MAY 1960 AND SEPTEMBER 1962 RESPECTIVELY 

 TESTED  STRONG 



AVO VCM163 TESTED




TUBE 1 - Ia 1.4/1.35                        gm 1.8/1.7

TUBE 2 - Ia 1.3/1.3                         gm 1.7/1.7




100% = Ia 1.2   gm 1.6




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