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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) ECC801S=12AT7 Telefunken Germany <> bottom NOS triple mica 1962 and 1970 (8.2/8.0mA and 8.3/8.6mA) (1-3% matched)
(!!!!!) (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)
(!!!!) (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 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) 12BH7A Sylvania Silvertone gray oval plates large "D" getter halo 1950's NOS (13.6/12.4ma)
(!!!!) (Best Single) 6550 Tungsol branded RCA NOS vented plate NOS 1965 (130ma) (Recommended for Audio Research Ref power supply)
