(!!!!) (Best 403B Pair) 403B=6AK5 Western Electric "O" getter NOS 1972-1974 (7.8/8.4ma)
(!!!!) (Best Overall Quad) 6AK5W/5654 Telefunken Germany <> bottom NOS branded AEG (8.6/8.6/8.8/8.9ma) 1-2% matched (matched on Amplitrex)
(!!!!) (Best RCA Pair) 6AK5 RCA gray plate NOS 1963 (8.4/9.1ma)
(!!!!) (BEST RCA PAIR) 6AK5 RCA gray plate NOS 1970 (9.7/10.2ma) 2-3% matched
(!!!!) (Good Value Pair) 403B Western Electric NOS "D" getter halo 1966-1970 (6.3/6.5ma) (6AK5 sub)
(!!!!) (Recommended Pair) 403B Western Electric NOS "D" getter halo 1970-1971 (6.3/6.9ma)
(!!!!) (Recommended pair) 403B Western Electric NOS "O" getter halo 1977 same date codes (6.6/7.2ma)
(!!!!) (Recommended Pair) 403B Western Electric NOS "O" getter halo 1977-1980 (6.4/6.1ma)
(!!!) (#1 6AK5W Best Value Pair) JRP-5654=6AK5W Raytheon black plate low hours/like new 1964 (7.5ma/7.7ma)
(!!!) (#1 6AK5W Matched Quad) 6AK5W/5654 Telefunken Germany <> bottom NOS branded AEG (8.6/8.6/8.7/8.8ma) (matched on Amplitrex)
(!!!) (#2 6AK5W Matched Quad) 6AK5W/5654 Telefunken Germany <> bottom NOS branded AEG (7.5/7.6/7.8/7.8ma) (matched on Amplitrex)
(!!!) (Best 403A pair) 403A Western Electric NOS "D" getters 1960-1966 (8.2ma and 8.4ma) (Best 6AK5 sub) 1-3% matched
(!!!) (Best Value Pair) 6AK5=403A Western Electric "D" getter low hours/like new 1950-1951 (7.0/7.3ma) 1-3% matched (oldest pair)
(!!!) (Best Value Pair) JW-6AK5=403A Western Electric "D" getter low hours/like new 1952-1953 (7.2/7.3ma) 1-2% matched
(!!!) (Recommended Pair) 403A Western Electric NOS "D" getter halo 1963-1967 (8.1/8.6ma)
(!!!) (Recommended Pair) 6AK5 RCA gray plate NOS 1964 (6.2/6.5ma)
(!!!) (Recommended Pair) 6AK5 RCA gray plate NOS 1964 (6.7/7.0ma)
(!!!) (Recommended Pair) 6AK5 Western Electric "D" getter NOS 1954-1957 (6.9/7.0ma) 1-2% matched
(!!) (#1 6AK5 Single) EF95=6AK5 Miniwatt by Mullard NOS 1969 (10.2ma) (Highest Ma and Gm)
(!!) (1 set of 10 tubes) 403A=6AK5 Western Electric used/good D getter halo 1950-1959 (1 set of 10 tubes)
