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(!!!!!) (BEST PAIR #1) 12AU7=ECC82 Telefunken Germany smooth plates NOS 1968 fair printing (9.0/9.8ma and 10/8.8ma) (Same Gm) 1-3% matched
(!!!!!) (Best Pair #1) E80CC=6085 Philips Miniwatt and Mullard SQ Holland 1962-1967 (6.7/7.1ma and 6.7/7.2ma)
(!!!!!) (Best Pair #1) ECC83=12AX7 Mullard UK branded Philips ribbed plates NOS 1964-1969 (163 series) (1.5/1.4ma and 1.3/1.4ma) (sweet sound) (Close 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 Pair #2) ECC83=12AX7 Mullard UK branded Philips ribbed plates NOS 1964 (163 series) (1.0/1.2ma and 1.4/1.1ma) (sweet sound) (Close Gm)
(!!!!!) (Best Single #1) 12AU7 Philips Holland NOS 1968 "O" halo (11.2/12.2ma) (same Gm) (sweet sound)
(!!!!!) (Best Single #2) 12AU7 Philips Holland NOS 1972 dimpled disc getter (10.8/11.5ma) 1-5% section balance
(!!!!!) (Best Single) ECC83=12AX7 Mullard UK branded Philips NOS 1967 (163 series) (1.2/1.3ma) (sweet sound) (Same Gm)
(!!!!!) (Best Value Pair) ECC83=12AX7 Philips Miniwatt Holland used/tests like new 1968-1970 (1.2/1.3ma and 1.4/1.1ma) 1-3% matched
(!!!!!) (Best Value Single) ECC83=12AX7 Mullard UK low hours/like new 1967 (163 series) (1.4/1.2ma) (sweet sound)
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)
(!!!!!) (Slightly Microphinic Single 1962) 12AX7A Mullard UK branded KNIGHT NOS 1962 (1.3/1.1mA and Gm=1800/1800)
(!!!!) (Best Pair #1) E80CC=6085 Philips and RTC Holland gold pins NOS 1961-1972 (6.3/6.8ma and 6.1/6.9ma) 1-3% matched
(!!!!) (Best Pair #2) E80CC=6085 Philips Holland 1963-1972 (6.1/6.8ma and 6.2/7.1ma) (Highest mA and Gm)
(!!!!) (Best Pair 1955) CV378=GZ37 Mullard UK "D" getter NOS 1955 no printing (56-56/40 and 57-57/40)
(!!!!) (Best Single #1) 12AU7=ECC82 Mullard UK shield logo NOS 1965 (11.2/12.6ma) (smooth rich sound)
(!!!!) (Best Single #1) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (12.6ma/11.3ma) (mic grade)
(!!!!) (Best Single #2) 5687WA Sylvania NOS 1960's (34/35ma) (Same Gm)
