(!!!!!) (Recommended Pair) JAN-12AT7WC GE gray plates NOS 1972-1979 (9.6/11.8ma and 8.6/12.4ma)
(!!!!) (2nd Best Pair - warm and smooth) 12AU7A GE NOS 1974-1981 (8.2/8.8ma and 8.3/8.8ma) (Rogue)
(!!!!) (2nd Best Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new faded printing (2.6/2.7ma and 2.7/2.8ma) 1-3% matched (Same Gm)
(!!!!) (2ND BEST RCA PAIR) 6EU7 RCA NOS 1970-1972 (44-50/32 and 43-49/32)
(!!!!) (2nd Best RCA Single) 6C10 RCA branded Westinghouse NOS 1971 (Ampeg / Fender) (1.0ma/2.1ma/1.6ma) (Strongest Single)
(!!!!) (3rd Best Single) 5751 GE 5-Star gray plates NOS 1964 (2.8/3.1ma)
(!!!!) (Best GE Pair #2) 6BX7GT GE "O" getter gray plates 1960's (50/56ma and 53/59ma)
(!!!!) (Best GE Pair) 5V4GA GE NOS rebranded Sylvania same date codes (63-65/40 and 63-66/40)
(!!!!) (Best GE Pair) 6FQ7 GE NOS 1976-1983 (7.2/8.2ma and 7.6/8.6ma)
(!!!!) (Best GE Quad) 12SN7GTA GE coin-base side getter NOS 1980 (matched quad) 1-3% matched
(!!!!) (Best Overall Single) GB-5963=12AU7 Sylvania Gold Brand Gold Pins NOS 1960's (11.2/13.6ma)
(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)
(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (10.4/10.4ma and 10.6/10.8ma) 1-2% matched
(!!!!) (Best Pair) 5670W GE NOS 1986 (8.8/9.4ma and 8.8/9.6ma) 1-3% matched
(!!!!) (Best Pair) 5R4GB GE black base NOS 1981 (50-52/40 and 50-53/40 x 2 tubes)
(!!!!) (Best Pair) 5R4GB GE black base NOS 1981 (51-53/40 and 51-54/40 x 2 tubes)
(!!!!) (Best Pair) 5R4GB GE black base NOS 1981 (51-54/40 and 52-55/40 x 2 tubes)
(!!!!) (BEST PAIR) 6C4WA GE JAN NOS 1974-1975 (10.4/10.8ma) (same Gm)
(!!!!) (BEST PAIR) 6DN7 GE branded GE and CBS NOS 1959 same build (46.4/46.5ma and 8/9ma)
(!!!!) (Best Pair) 6DN7 RCA NOS 1960's (30ma/9.6ma and 34ma/8.5ma)