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(!!!!!) (Best Mullard 1962) 12AX7=ECC83 Mullard UK BVA ribbed plates NOS copper grid posts 1962 (1.1/1.1ma) (same Gm) 1% section balance
(!!!!!) (Best Overall Single) 12AU7=ECC82 Mullard BVA UK NOS 1972 (11.8/12.0ma) (Same Gm) 1-2% section balance
(!!!!!) (Best Pair) ECL82=6BM8 Mullard NOS 1967-1970 (2.6/37.5ma and 2.3/34ma) 1-5% matched
(!!!!!) (Best Single) 6V6GT GE NOS 1947 (41.5ma)
(!!!!!) (Best Single) 6V6GT GE NOS 1962 (47.5ma)
(!!!!!) (Best Single) 6V6GT GE NOS 1964 (53.6ma)
(!!!!!) (Best Value Single) 12AX7=ECC83 Mullard UK branded Philips ribbed plates NOS 1965 (1.0/0.9ma) (163 series)
(!!!!!) (Best Value Single) 6V6GTA GE NOS 1960's slightly tilted plate and glass (41.5ma)
(!!!!!) (Best Value Single) EZ81 Philips Miniwatt by Mullard Blackburn UK "D" getter low hours/tests like new 1962 (56/40 and 56/40) 1% section balance
(!!!!!) (Best Value) EZ81 Philips Miniwatt by Mullard Blackburn UK "O" getter used/tests like new 1965 (58/40 and 58/40) 1% section balance
(!!!!!) (Recommended Single) CV4035=M8214=12AX7 Mullard England box plates NOS flying leads 1961 (solder leads into ckt)
(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)
(!!!!!) (Single) GZ34 Amperex Bugle Boy by Mullard used/tests like new 1962 faded printing some vertical scratches on base (60/40 and 62/40)
(!!!!!) (Slightly Microphinic Single 1962) 12AX7A Mullard UK branded KNIGHT NOS 1962 (1.3/1.1mA and Gm=1800/1800)
(!!!!) (Best Overall Pair) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.2/11.5ma and 1.2/11.4ma) 1% matched
(!!!!) (Best Overall Single) CV4004=12AX7 Mullard box plates NOS 1971-1972 (Gm=1600/1700) (1.3/1.5ma)
(!!!!) (Best Overall Single) CV4004=12AX7 Mullard box plates NOS 1981 (1.4/1.4ma and Gm=1800/1800) 1% section balance
(!!!!) (Best Pair #1) 12AU7WA=6189 RT Radio Technique France NOS 1961 (9.4/9.0ma and 9.2/9.2ma) (close Gm) 1-3% matched
(!!!!) (Best Pair #1) ECL82=6BM8 Mullard UK branded Mazda NOS 1970's (2.2/34ma and 2.0/33ma) 1-3% matched
(!!!!) (Best Pair #2) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.5/11.5ma and 1.7/11.4ma) 1-3% matched
