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(!!!) (Best Pair #3) E80CC=6085 Philips SQ and RTC Holland NOS 1967-1971 (5.8/6.9ma and 5.6/7.0ma) (Same Gm)
(!!!) (Best Value Single) ECL82=6BM8 Pope Holland NOS 1969 made in Hendon Works Australia plant (2.0/28ma)
(!!!) (Recommended Single) EF94=6AU6 Tungsol used/tests like new 1957 (10ma)
(!!!) (Recommended Single) ER-230=30 Raytheon 1930's used/like new (4.1ma and Gm=800)
(!!!) (Best Single) GB-6350 Sylvania Gold Brand black plates NOS 1963 square "D" getter (10.2/10.6ma)
(!!!) (Recommended Single) PCC88=7DJ8 Siemens Germany NOS 1972 (11.5/12.2ma)
6C4WA Sylvania NOS 1965 and 1971 (read review)
(!!!) (Slightly microphonic Single) 12BH7A CBS Oval Black Plates "U" getter NOS 1960 era (8.4/9.0ma)
(!!!) (Slightly Microphonic Single) CV1985=6SL7GTY Brimar UK tests like new 1950's (2.2/2.2ma)
(!!!) (slightly microphonic) 5687 Tungsol black plates "U" getter halo branded GE NOS 1950's (36/40ma)
(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)
(!!!!) (Best Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.9ma and 3.0ma) 1-2% matched
(!!!) (Best Pair) 12B4A GE NOS 1960's (47ma and 48ma)
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded Amperex NOS 1982 (14.0/15.2ma and 16.0/16.4ma)
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (14.0/15.2ma and 16.0/16.4ma) (Highest ma and Gm)
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (15.4/15.8ma and 14.4/16.0ma) (Highest ma and Gm)
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1971 (7.2/8.0ma and 7.6/6.6ma) (close Gm)
(!!!) (~ RECOMMENDED PAIR ~) 329A Western Electric NOS 1956 (33ma and 34ma)
(!!!) (Best Pair #3) 448A Western Electric tipped top used/good 1965-1966 (28ma and 29.2ma) (same Gm)
(!!!) (Best Pair) 6SN7GTA Westinghouse USA black plates NOS 1955 era (7.0/7.6ma and (7.0/7.9ma)
