(!!!!) 6AK5 GE NOS 1973 (10.2ma)
(!!!!) GL=5654=6AK5W GE 5 Star NOS 1954 (6.8ma)
(!!!) (Recommended Pair) JTL-5654=6AK5W Tungsol gray plate "D" getter used/good 1956-1958 (6.4ma and 6.5ma)
(!!) (Recommended Single) 6AK5 Tungsol gray plate NOS 1956 (8.3ma)
(!!!!) (Recommended Pair) JHY-6AK5 Hytron black plate NOS 1952-1953 (7.5ma and 7.6ma)
(!!) (Best 403B Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (8.2ma) (special quality)
5654=6AK5 RCA black plate NOS 1976 (7.2ma)
5654=6AK5W=EF95 Radio Technique (RT) France NOS 1962 (5.7ma)
(!!) 403A=6AK5 Western Electric NOS 1974 (6.6ma)
(!!) 403B=6AK5 Western Electric D getter used/good 1966-1967 faded top getters (6.3/7.3ma) (6AK5 sub)
JHY-6AK5 Hytron black plate NOS 1952 in white box (9.2ma)
(!!) (Best Single) JW-6AK5 Western Electric NOS "D" getter 1953 (6.2ma)
(!!) 403B=6AK5 Western Electric NOS "O" getter 1980 in 1979 box (5.8ma)
(!!) 403A=6AK5 Western Electric NOS "D" getter 1971 (6.8ma)
(!!) 403A=6AK5 Western Electric used/good 1970 (8.2ma)
(!!!!) (Recommended Pair) 5654=6AK5 RCA Command Series black plate NOS 1964-1966 (9.2ma and 8.3ma) (Same Gm)
(!!) (Best 403B Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (9.2ma) (special quality)
(!!) 403A=6AK5 Western Electric "D" getter like new 1966 (7.5ma)
(!!!!) (Recommended Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (9.3/8.7ma) (same Gm)
(!!!!) (Recommended Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (7.3/7.0ma)