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(!!!!) (Best Pair #1) 7868 Sylvania tipped top used/tests like new 1960's (65ma and 66ma) (strong mA and Gm)
(!!!!) (Best Pair #2) EC92=6AB4 Siemens Halske NOS branded Philips 1967 (9ma and 9ma)
(!!!!) (BEST PAIR #2) EL37 Mullard UK branded Amperex gray plates used/good 1968 (73.5ma and 72ma)
(!!!!) (Best Quad) 8417 RCA by Sylvania NOS 1970's (95.5, 96, 98, 99.6ma)
(!!!!) (Recommended Pair) 8417 Sylvania branded RCA NOS 1972-1973 (119.2ma and 123.7ma)
(!!!) (Best Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (12.0ma and 12.8ma)
(!!!) (Best Pair) EC92=6AB4 Siemens Halske Germany branded Mullard NOS 1964 (10.2ma and 10.6ma)
(!!!) (Best Single #2) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (9.8ma/12ma) (recommended for mic)
(!!!) (Best Single) 8417 Sylvania NOS (121ma)
(!!!) (Best Single) 8417 Sylvania NOS 1970 era (111ma)
(!!!) (Best Single) EC92=6AB4 Siemens Halske Germany branded Mullard NOS 1964 (10ma) (mic)
(!!!) (Best Sylvania Single) 8417 Sylvania NOS branded Westinghouse NOS 1973 (113mA)
(!!!) (Best Value Single) 12AX7=ECC83 FISHER HOLLAND large "O" getter halo 1960 used/good (Gm=1550/1600 and .9/1.0ma)
(!!!) (Best Value Single) 12AX7=ECC83 FISHER HOLLAND large "O" getter halo 1961 used/good (Gm=1500/1600 and .9/.9ma)
(!!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (10.4ma and 10.6ma)
(!!!) (Recommended Pair) 8417 GE NOS 1969 and 1986 same build (91ma and 94.6ma)
(!!!) (Recommended Single) 12AT7 Fisher Telefunken Germany <> bottom NOS 1964 (7ma/11ma) (recommended for mic)
(!!!) (Recommended Single) 12AT7 Fisher Telefunken Germany <> bottom NOS 1964 (9ma/6.5ma) (recommended for mic)
(!!!) (Recommended Single) EC92=6AB4 Siemens Halske NOS 1967 (9.2ma)
(!!!) (Single) 7868 RCA gray plate used/75% 1970 era (47.6ma)
