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(!!!!!) (Best Overall Pair) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 NOS (2.7/2.5ma and 2.9/2.6ma) (same Gm) (AKG, Tele 251, Peluso, Rode)
(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
(!!!!!) (Best Single 1966) ECC83=12AX7 Mullard UK ribbed plates NOS 1966 (163 series) (1.3/1.1ma) (same Gm) (sweet sound)
(!!!!!) (Best Single 1967) ECC83=12AX7 Mullard UK ribbed plates NOS 1967 (163 series) (1.4/1.2ma) (same Gm) (sweet sound)
(!!!!!) (Best Value Single) 6072 GE 5 star triple mica black plates "O" getter halo 1960's - 2 hairline cracks top of glass - tests like new (2.4/2.7ma) (mic grade)
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!) (Best Overall Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (11.2/11.7ma) 1-2% section balance (Highest mA and Gm)
(!!!!) (Best Pair #2) 12AU7=ECC82 Philips Holland NOS 1971-1972 dimpled disc halos (10.2/10.6ma and 11.2/11.6ma)
(!!!!) (Best Pair #2) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.4/9.0ma and 9.3/9.0ma) 1% matched (same Gm)
(!!!!) (Best Pair #3) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/10.2ma and 9.8/10.8ma)
(!!!!) (Best Single #1) JRP-12AX7 Raytheon Black Plates NOS 1962 (Gm=1700/1800) (1.5/1.6ma) (Highest mA and Gm)
(!!!!) (Best Single #2) ECC803S=12AX7 Telefunken Qualitex Ulm Germany <> bottom like new 1964 (1.3/1.5ma and Gm=1600/1800)
(!!!!) (Best Single #3) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (12.0/10.2ma)
(!!!!) (Best Single) E88CC=6922 Telefunken Germany <> bottom NOS 1962 (16.4/17.5ma) (mic grade)
(!!!!) (Best Value Pair #1) 12AX7A RCA gray ribbed plates NOS 1967-1973 (best tone) (0.9/0.9ma and 0.9/1.1ma) (Fender)
(!!!!) (Best Value Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/8.4ma and 8.4/8.8ma) 1-2% matched
(!!!!) (Best Value Single) 12AU7 Philips Miniwatt Holland like new 1961 large "O" getter halo (9.6/11ma)
(!!!!) (Best Value Single) 6550 Tungsol branded Sylvania smooth gray plate used/tests like new 1960 era (138ma)
(!!!!) (Best Westinghouse Single) 6SN7GTB Westinghouse USA black plates NOS 1963 (8.2/8.0ma)
(!!!!) (Pair) 12B4A GE NOS rebranded Raytheon and RCA 1960's (35ma and 37.5ma) (same Gm)
