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(!!!!) (Best Overall Single) 5670W GE JAN NOS 1987 (9.6/9.2ma) (Same Gm)
(!!!!) (Best Overall Single) 6C10 GE rebranded Westinghouse NOS 1970 era (Ampeg / Fender) (1.5ma/1.4ma/1.6ma)
(!!!!) (Best Pair #1) 5670W GE NOS 1986 (9.0/8.2ma and 8.6/9.0ma) 1-3% matched
(!!!!) (Best Pair #1) 5670W GE NOS 1986-1987 (9.8/8.8ma and 9.0/9.8ma) 1-3% matched (close Gm)
(!!!!) (Best Pair #1) 5763 Sylvania JAN NOS 1972-1973 (46ma and 47ma)
(!!!!) (Best Pair #1) 6BX7GT Sylvania triple mica "O" getter NOS 1960 era (74/66.5ma and 78.5/68.5ma) (same Gm)
(!!!!) (Best Pair #2) 5670W GE NOS 1986 (9.4/11ma and 9.8/11.6ma) 1-5% matched (Highest Ma and Gm)
(!!!!) (Best Pair #2) 6BX7GT Sylvania triple mica "D" getter NOS 1950's (52.2/47ma and 48/44ma)
(!!!!) (Best Pair #2) 6BX7GT Sylvania triple mica "D" getter NOS 1950's (60/55ma and 52/54ma)
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (7.8/8.8ma and 7.6/8.2ma) 1-5% matched
(!!!!) (Best Pair #3) 5763 Sylvania JAN NOS 1974 (33ma and 34ma)
(!!!!) (BEST Pair #3) 6CW4 GE NOS 1974-1978 (105/60 and 107/60) (strong emission)
(!!!!) (Best Pair 1960) 12AX7 GE tall gray ribbed plates "U" getter like new 1960 (1.2/1.2ma and 1.3/1.2ma) 1-3% matched
(!!!!) (BEST Pair) 6CW4 GE NOS 1966-1970 (117/60 and 118/60) (strong emission)
(!!!!) (BEST Pair) 6CW4 GE NOS 1975-1976 (120/60 and 120/60) (strong emission)
(!!!!) (BEST PAIR) 6F8G=VT-99 Raytheon NOS 1945 era (8.6/10.2ma and 9.8/9.0ma)
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1953 (1.0ma and 1.0ma) 1% matched **
(!!!!) (Best Quad #1) 6L6GT Russian branded Raytheon NOS 1970's in white boxes (71.0/71.2/71.5/71.8ma) (not a sub for 6L6GC)
