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(!!!!) (Single) 12BH7 Sylvania Philco black oval plates "D" getter used/good 1953 (9.8/9.5ma) (Same Gm)
(!!!!) (Best Single #2) 12BH7A RCA NOS 1963 (10.6/11.6ma)
(!) 12AX7A Amperex by RFT East Germany NOS 1970's (Gm=1300/1400)
(!!!!) (Best Sound/Best Price) 12AT7 GE gray plates NOS 1961 (11.5/13ma and 13.5/11.5ma) (sweet sound)
(READ REVIEW) JG-5814A=12AU7 GE triple mica NOS "o" getter 1958-1959 (9.8/9.6ma) 1-2% section balance
(READ REVIEW) E88CC=6922 Siemens Halske Germany NOS 1962 (16.0/15.5ma) (mic grade)
(!!!!) (GE Pair) 6BQ7A GE NOS "O" getter halo 1973-1980 (10.5/9.7ma and 11.4/9.4ma) (Schiit, DNA, Modwright)
(!!!!) (GE Pair) 6BQ7A GE NOS "O" getter halo 1976 (7/10ma and 7/9ma) (Schiit, DNA, Modwright)
(!!!!) (Best Pair #2) EF86 ADZAM made by Valvo Germany NOS 1970 (3.1ma and 2.9ma) 1-5% matched
(!!!) (Best Value Single) GL-5751 GE "5 Star" black plates triple mica D getter 1955 era used/tests like new (2.3/2.4ma) (Gm like new) 1-2% section balance
(!) 12AU7A Sylvania NOS 1960 (10/10.1ma) 1-2% section balance
(!) (SINGLE) JAN-CRP-5755=420A Raytheon clear top NOS 1965 (1.3/1.5ma)
(!!!!) (Recommended Single) E188CC=7308 Telefunken <> bottom gold pins used/good 1969 era (13.2ma/14.8ma) (rare)
(!) (SINGLE) CK-5755=420A Raytheon clear top NOS 1960's (1.4/1.3ma)
245A Western Electric used/65% 1930's
(!!!) (Best Value PAIR) 6GH8A Lindal Hitachi Japan NOS 1970's (10/11.6ma and 11.5/10.5ma)
(!!!) (Best Value PAIR) 6GH8A Lindal Hitachi Japan NOS 1970's (10.8/13.8ma and 10.8/13.8ma) 1-3% matched
(!!!!) (Best Single 1966) 12AX7=ECC83 Philips Holland NOS 1966 (2.1/1.9ma and Gm=2100/2100) (Highest mA and Gm)
(!!!!!) (Best Overall Pair) 12AX7=ECC83 Philips Holland NOS 1966 same date codes (1.6/1.7ma and 1.5/1.5ma) 1-3% matched (Highest Ma and Gm)
(!!!) (Recommended Mullard Pair) ECC81=12AT7 Mullard UK branded Philips NOS 1970-1973 (9.6/8.4ma and 9.0/9.4ma) (Jolida, Fender)
