(!!!!!) (2nd Best Pair 1960) 5814A GE "5 STAR" triple mica "O" getter halo 1960 (10.0/10.4ma and 10.0/9.2ma) (best audio grade 12AU7 SUB)
(!!!!!) (Best Pair 1960) 5814A GE "5 STAR" triple mica "O" getter halo 1960 (10.4/10.6ma and 10.6/10.8ma) (best 12AU7 SUB) 1-2% matched
(!!!!!) (Recommended 5 Star Single) 5751 GE "5 Star" gray plates triple mica "O" getter 1959 like new (2.5/2.4ma)
(!!!!!) (Recommended 5 Star Single) 5751 GE "5 Star" gray plates triple mica "O" getter 1960 like new (2.2/2.1ma) (same Gm)
(!!!!) (Best Single 1957) JG-5751WA GE NOS black plates triple mica U getter halo 1957 (2.3/2.7ma) (High mA and Gm)
(!!!!) (Best Single) CV181=ECC32 Mullard black base black plates NOS 1950's (6.6/6.3ma)
(!!!!) (Best Value Pair #1) 12AX7A RCA gray ribbed plates NOS 1967-1973 (best tone) (0.9/0.9ma and 0.9/1.1ma) (Fender)
(!!!!) (Best Value Single) 6AS7G RCA gray plates NOS 1971 (60ma/78ma)
(!!!!) (Good Value Pair 1960's) 12AX7A RCA gray ribbed plates NOS 1967 (best tone) (1.0/0.8ma and 1.0/0.8ma) (1-2% matched)
(!!!!) (Recommended Pair) 6LQ6=6JE6C Sylvania NOS 1970 era (76ma and 77ma)
(!!!!) (Recommended Single) 2A3 RCA gray plates NOS 1960 (104ma)
(!!!!) (Recommended Single) CV181=ECC32 Mullard black base gray plates like new 1950's (5.2/5.3ma) (close Gm)
(!!!!) (Single) 6CG7 Tungsol used/good 1960 era black shield between plates (7ma/7ma)
(!!!) (Best 5-Star) 5814A=12AU7 GE Electronic Secretary "5 STAR" triple mica NOS 1960 (10.8/10.4ma) (Same Gm)
(!!!) (Best Single 1953) JG-5814 GE NOS "square getter halo" and "short wide ribbed dark black plates" 1953 in white box (11.0/12.5ma)
(!!!) (Best Single 1954) 5814A=12AU7 GE "5 Star" triple mica NOS 1954 (10.2/10.8ma)
(!!!) (Best Single 1960) 5814A=12AU7 GE "5 STAR" triple mica NOS 1960 (10.0/10.4ma) 1-3% section balance
(!!!) (Best Single) 7025 Sylvania NOS 1970's (Gm=2200/2300 and 1.4/1.5ma)
(!!!) (Best Value Single) 5814A GE 5 STAR "O" getter NOS 1960's faded printing (9.6/11.8ma)
(!!!) (Good Value Single) 12AT7 Tungsol NOS 1960's (6.4/8.4ma)
