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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 #1) 5U4GB HYTRON NOS 1960 "O" getter halos (56-58/40 and 57-58/40)
(!!!!!) (Best Pair #2) 12AX7=ECC83 Philips Miniwatt Holland NOS and like new 1965-1966 (1.3/1.5ma and 1.4/1.3ma) 1-3% matched
(!!!!!) (Best Pair) 5U4GB CBS NOS 1959 (56-60/40 and 56-58/40)
(!!!!!) (Best Pair) EF86 Amperex Bugle Boy Holland NOS 1966 (3.3ma and 3.0ma) (close Gm)
(!!!!!) (Best Single #1) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (10.8/8.9ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)
(!!!!!) (Best Value Pair) 12AT7=ECC81 Telefunken Germany Diamond Bottom <> used/good 1960's (7.6/6.2ma and 6.2/7.2ma)
(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!!) (Single) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (9.8/14.2ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)
(!!!!!) (Single) EF86 Amperex Bugle Boy Holland NOS 1963 (3.5ma)
(!!!!!) (Single) EF86 Amperex Bugle Boy Holland NOS 1964 (3.0ma)
(!!!!) (Best Pair #1) 6V6GT GE black plate NOS 1954 (43ma and 43ma) 1-2% matched
(!!!!) (Best Pair #4) 6V6GT GE black plate NOS 1954 (41.4ma and 42ma) 1-2% matched
(!!!!) (Best Pair #5) 6V6GT GE black plate NOS 1954 (46.5ma and 48ma) 1-5% matched
(!!!!) (Best Pair 1960) 12AX7 Philips Miniwatt Holland large "O" halo low hours/tests like new 1960 (1.0/1.3ma and 1.0/1.2ma) 1-3% matched
(!!!!) (Best Single #1) 5881 Tungsol branded CBS NOS 1961 (88ma)
(!!!!) (Best Single #2) ECC803S=12AX7 Telefunken Qualitex Ulm Germany <> bottom like new 1964 (1.3/1.5ma and Gm=1600/1800)
(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)
(!!!!) (Best Single 1966) 12AX7 Philips Holland NOS 1966 (Gm=1700/2100 and 1.2/1.7ma)
(!!!!) (Best Single) 6550 Tungsol branded RCA NOS vented plate NOS 1965 (130ma) (Recommended for Audio Research Ref power supply)
