(!!) (Recommended Pair) 6J6A Tungsol NOS "D" getter 1961 (7.5/8.8ma and 7.8/9.2ma)
(!!) (Recommended Pair) 6JS6C GE Realistic and GE NOS 1970's - 1981 (70ma and 76ma)
(!!) (Recommended Pair) 6JT6A Sylvania tipped NOS 1960's same build (72ma and 72.2ma)
(!!) (Recommended Pair) 6K11=6Q11 GE NOS 1979 (1 pair)
(!!) (Recommended Pair) 6KM6 GE branded Westinghouse NOS (152ma and 155ma)
(!!) (Recommended Pair) 6KZ8 Sylvania branded Raytheon NOS
(!!) (Recommended Pair) 6LF6 Sylvannia NOS same build 1970 era (121ma and 127ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
(!!) (Recommended Pair) 6LR6 GE NOS 1967-1980 (70ma and 79ma)
(!!) (Recommended Pair) 6ME6 GE NOS (70ma and 73ma)
(!!) (Recommended PAIR) 6S4A RCA USA black plate NOS 1960's - 1970's (25.5ma and 28.5ma) (Highest mA and Gm)
(!!) (Recommended Pair) 6S4A Westinghouse black plate NOS -1963 era (20ma and 21.2ma)
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1958 and 1970 (10.3ma and 11ma)
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1976 (10.2ma and 10.2ma) **
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1976 (11ma and 11ma) **
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1976 (12ma and 13ma) **
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1976 (9ma and 8.6ma) **
(!!) (Recommended Pair) 6SK7 Sylvania NOS 1950 era (9.2ma and 9.0ma)
(!!) (Recommended PAIR) 7C5 Sylvania branded International NOS 1960's (39ma and 40ma) (LOKTAL BASE 6V6GT)
(!!) (Recommended Pair) 8068 GE Hewlett Packard scratch on glass and GE NOS 1970-1971 (46.5ma and 48ma) (Highest Ma)
(!!) (Recommended pair) E83F=6689 Philips SQ Holland NOS gold pins 1974 (9.4ma and 9.6ma)
