(!!!!) (1 Pair) 5654=6AK5W GE NOS 1983 (7.3ma and 7.9ma) (same Gm)
(!!!!) (2nd Best Pair) JHY-6AK5 Hytron black plate NOS 1952 (9.8ma and 9.4ma) 1-5% matched
(!!!!) (Best Overall Pair) JHY-6AK5 Hytron black plate NOS 1952 (8.1ma and 8.1ma) 1-2% matched
(!!!!) (Recommended Pair) 403B Western Electric NOS "D" getter 1969 (5.1/5.1ma)
(!!!!) (Recommended Pair) 403B Western Electric NOS "D" getter 1969 (5.6/5.6ma) 1% matched
(!!!!) (Recommended Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (7.3/7.0ma)
(!!!!) (Recommended Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (9.3/8.7ma) (same Gm)
(!!!!) (Recommended Pair) 5654=6AK5 RCA Command Series black plate NOS 1964-1966 (9.2ma and 8.3ma) (Same Gm)
(!!!!) (Recommended Pair) JHY-6AK5 Hytron black plate NOS 1952 (7.3ma and 7.6ma)
(!!!!) (Recommended Pair) JHY-6AK5 Hytron black plate NOS 1952-1953 (7.5ma and 7.6ma)
(!!!!) (Recommended Quad) 403B=6AK5 Western Electric NOS "D" getter 1969 matched set of 4 (4.8, 4.9, 5.1, 5.2ma)
(!!!!) (Recommended Quad) 403B=6AK5 Western Electric NOS "D" getter 1969 matched set of 4 (6.3, 6.3, 6.4, 6.5ma)
(!!!!) (Recommended Quad) 403B=6AK5 Western Electric NOS "D" getter 1969 matched set of 4 (6.6, 6.7, 6.8, 6.8ma)
(!!!!) (Recommended Quad) 403B=6AK5 Western Electric NOS "D" getter 1969 matched set of 4 (6.9, 6.9, 7.1, 7.2ma)
(!!!!) 6AK5 GE NOS 1973 (10.2ma)
(!!!!) GL=5654=6AK5W GE 5 Star NOS 1954 (6.8ma)
(!!!) (Best Single) 403A Western Electric NOS "D" getter 1955 (10.2ma)
(!!!) (Recommended Pair) JTL-5654=6AK5W Tungsol gray plate "D" getter used/good 1956-1958 (6.4ma and 6.5ma)
(!!) (Best 403B Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (8.2ma) (special quality)
(!!) (Best 403B Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (9.2ma) (special quality)