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(!!!!!) (Best GZ34) GZ34 Teonex by Mullard UK fat brown base 1959 (58/40 and 58/40) (f31 series) (similar to metal base)
(!!!!!) (Best Overall Pair) ECC83=12AX7 Telefunken Germany smooth plates NOS 1965-1967 (1.3/1.1ma and 1.3/1.1ma) (phono grade) 1% matched (Same Gm)
(!!!!!) (Best Overall Pair) JG-5687WA GE black plates NOS 1962 (37/38ma and 35/37ma) (low noise)
(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
(!!!!!) (Best Pair #2) ECC83=12AX7 Telefunken Germany <> smooth plates NOS 1966 (1.0/1.0ma and 1.0/1.0ma) (phono grade) 1% matched (same Gm matching)
(!!!!!) (Best Pair #2) ECC83=12AX7 Telefunken Germany <> smooth plates NOS 1966 (1.0/1.2ma and 1.0/1.3ma) (phono grade) 1-3% matched (very close Gm matching)
(!!!!!) (Best Single 1966) GZ34 Mullard Blackburn UK made for Knight NOS 1966 (58/40 and 58/40)
(!!!!!) (Best Single) GZ34 Mullard Blackburn UK branded RCA NOS 1967 (57/40 and 58/40)
(!!!!!) (Best Value 1961) GZ34 Mullard UK shield logo fat base 1961 low hours/like new (53/40 and 55/40) (f31 series)
(!!!!!) (Best Value Pair) 6SN7GTB GE NOS 1964-1965 same build (6.4/7.0ma and 6.6/7.6ma)
(!!!!!) (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 CV4003 Quad) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.4/9.0, 8.4/9.0, 8.4/8.8, 8.4/8.8mA)
(!!!!) (Best Holland Single) GZ34 Philips Miniwatt Holland NOS double "D" getters 1962 (57/40 and 58/40) (Modwright, Cary, Line Magnetic, Woo)
(!!!!) (Best Overall Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/9.6ma and 9.4/9.8ma) 1% matched (can make a quad with another pair)
(!!!!) (Best Overall Quad) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/8.8, 8.8/8.8, 8.6/8.8, 8.6/9.0mA)
(!!!!) (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 Overall Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (12.2/12.8ma) 1-3% section balance (highest mA and Gm)
(!!!!) (Best Overall Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1967 (1.5/1.5ma and Gm=1800/1800) 1% section balance
(!!!!) (Best Pair #2) 12AU7 Philips Holland NOS 1971-1972 dimpled disc halo (10.2/10.6ma and 11.2/11.6ma)
