ECC81, MATCHED PAIR OF MULLARD , SAME FACTORY CODE, Tk3 B7G2, BLACKBURN JULY 1957 MANUFACTURE
On offer today is a lovely matched pair of Mullard ECC81 Blackburn manufactured in 1965. Carrying good yellow print, they tests as excellent using my AVO Valve Characteristic Meter VCM163 presenting as a strong pair of valves, well matched both inter valve and also showing excellent matching of each triode section within each envelope..
