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(!!!!!) (Best Overall Single) CK-5687WB Raytheon black plates NOS 1960's (40.5ma/42ma) (Audio Note, Modwright, Manley) Highest mA and Gm
(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
(!!!!) (BEST GE PAIR #2) 5687WB GE NOS rebranded CK-5687WB Raytheon black plates with hint of bronze 1970's (Audio Note, Manley, Modwright, Audion) (36.8/37.4ma and 36.6/35.8ma)
(!!!!) (BEST GE PAIR #3) 5687WB GE NOS rebranded CK-5687WB Raytheon black plates 1970's (Audio Note, Manley, Modwright) (35.8/37.5ma and 34.6/36.2ma)
(!!!!) (BEST PAIR #1) CK-5687WB Raytheon black plates 1960's (Audio Note, Manley, Modwright) (33/34ma and 33/34.2ma) 1-2% matched
(!!!!) (Best Single) JAN-5687WA Sylvania NOS 1967 (38/39ma) (Highest Ma and Gm)
(!!!!) (Best Single) JAN-5687WB GE NOS 1972 (34.6/35.6ma)
(!!!!) (Best Single) JHS-5687WA Sylvania NOS 1966 (46/48ma) (Highest Ma and Gm)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (25/27ma and 26.5/26ma)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (26.2/27ma and 25.6/28ma)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (26/27ma and 26.6/27.8ma)
(!!!!) (Good Value Pair) JAN-5687WB GE used/good 1970 era (29.5/31ma and 29.2/29.6ma)
(!!!!) (microphonic single) 5687 Tungsol ribbed black plates "U" getter NOS 1952 (42/41.5ma) (1st series made)
(!!!!) (microphonic singles) JAN-5687WB Tungsol branded Raytheon black plates "U" getter NOS 1950's (5 in stock)
(!!!) (Best Overall Pair #2) 5687WB GE branded CK5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (39/38.6ma and 38/37ma)
(!!!) (Best Overall Pair) 5687WB GE branded CK5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (40/41.5ma and 40/40.5ma)
(!!!) (Best Pair) JRP-5687WA and JAN-5687WA Raytheon bronze plates tests like new 1964 era faded printing (33.4/36.4ma and 33.5/33.0ma)
(!!!) (Best Raytheon Pair #1) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (35.0/34.6ma and 34.5/35.0ma) 1-2% matched
(!!!) (Best Raytheon Pair #2) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (36.5/35.0ma and 38.5/35.5ma) 1-3% matched
(!!!) (Best Raytheon Pair #3) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (35/37ma and 35.5/38ma) 1-3% matched (Highest Gm) (Manley, Modwright, Audio Note)
