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(!!!!) (Best Pair #2) JHY-6AK5 Hytron black plate NOS 1952 (9.2ma and 9.6ma)
(!!!!) (Best Quad #1) JHY-6AK5 Hytron black plate NOS 1952 (8.7ma, 8.9ma, 8.8ma and 8.9ma)
(!!!!) 5654=6AK5W GE Dumont NOS 1970's (10.2ma)
(!!!!) 6AK5 GE NOS 1973 (10.2ma)
(!!!) (Best Pair #1) JHY-6AK5 Hytron black plate NOS 1952 (9.2ma and 9.3ma) 1-3% matched (same Gm)
(!!!) (Best Pair) JHY-6AK5 Hytron black plate NOS 1952 (7.8ma and 7.4ma) (same Gm)
(!!!) (Best Single) 403A Western Electric NOS "D" getter 1957 (8.7ma)
(!!!) (Best Single) GB-5654=6AK5 Sylvania Gold Brand nickel pins 1970's (8.5ma)
(!!!) (Pair) JHY-6AK5 Hytron black plate NOS 1952 (6.9ma and 7.0ma)
(!!!) (Single) 403A Western Electric NOS "D" getter 1957 (5.7ma)
(!!) (Best Single) JW-6AK5 Western Electric NOS "D" getter 1953 (6.2ma)
(!!) (Recommended Single) 6AK5 Tungsol gray plate NOS 1956 (8.3ma)
(!!) (Set of 4) JHY-6AK5 Hytron black plate NOS 1952 (test between 6-8ma unmatched) (4 for $39.99)
(!!) 403A=6AK5 Western Electric used/good 1970 (8.2ma)
(!!) 403B=6AK5 Western Electric NOS "O" getter 1980 in 1979 box (5.8ma)
(!!) 6AK5 Western Electric NOS "D" getter 1955 (5.8ma)
(!) (Best Single #1) JHY-6AK5 Hytron black plate NOS 1952 (9.2ma)
(!) (Best SIngle) EF95=6AK5 Raytheon Toshiba Japan NOS 1960's (8.6ma)
(!) (Best Single) JHY-6AK5 Hytron black plate NOS 1952 (8.1ma)
(!) (Single) JHY-6AK5 Hytron black plate NOS 1952 (6.8ma)
