Log in using the new customer accounts page.
(!!!) (Best Pair #1) 6BL7GTA GE black plates NOS 1959-1960 (50/49ma and 49/52.5ma)
(!!!) (Best Pair #1) 6GM5 Sylvania rebranded Tungsol and Sylvania NOS 1960 era (59ma and 60ma)
(!!!) (Best Pair #2) 12JB6 Sylvania NOS 1960's - 1970's (93ma and 102ma)
(!!!) (Best Pair #2) 6463 GE NOS 1965 (15.0/16.4ma and 15.6/15.8ma) (same pinout as 6350)
(!!!) (BEST PAIR #2) 6AU5GT GE gray plates NOS 1960's (66.5ma and 65ma)
(!!!) (BEST PAIR #3) 6463 GE NOS 1965 (14.5/12.8ma and 13.5/13.7ma)
(!!!) (Best Pair #3) 6AQ5A GE NOS 1960-1975 (46.5ma and 49.6ma)
(!!!) (Best Pair #3) 6GU7 RCA NOS 1970-1971 (10/13ma and 11/12ma)
(!!!) (Best Pair #4) 6AU6A GE NOS 1977 (6.1ma and 6.1ma) 1-3% matched (Sony C800G mic)
(!!!) (BEST PAIR) 12AL5 Tungsol NOS 1960 (48-48/40 and 48-48/40)
(!!!) (Best Pair) 12JB6 Sylvania NOS 1960's - 1970's (71ma and 74ma)
(!!!) (Best Pair) 5751 GE double mica gray plates NOS 1979-1981 (2.4/2.5ma and 2.3/2.6ma) 1-3% matched (Close Gm)
(!!!) (Best Pair) 6203 GE NOS 1976-1979 (53-54/40 and 54-54/40)
(!!!) (Best Pair) 6AL5 Tungsol NOS "D" getter 1957-1965 (48-48/40 and 46-48/40)
(!!!) (BEST PAIR) 6AU5GT GE gray plates NOS 1960's (75ma and 74ma)
(!!!) (Best Pair) 6AU6A Channel Master Hitachi Japan NOS D getter 1960 (8.6ma and 9.2ma)
(!!!) (Best Pair) 6BL7GTA GE gray plates NOS 1972 and 1983 (42.5/47.5ma and 41.0/41.5ma) (very close Gm matching)
(!!!) (BEST PAIR) 6BX7GT Sylvania "D" getter halo NOS 1950's (57.6/62.6ma and 64.0/58.0ma) (close triode balance)
(!!!) (Best Pair) 6F6GT GE coated glass NOS 1951-1952 (36ma and 39.5ma)
(!!!) (Best Pair) 6F6GT Sylvania and Sylvania Philco NOS 1950-1952 (40ma and 41.5ma) (close Gm)
