(!!!!!) (Best Black Plate Single) JRP-12AX7 Raytheon Black Plates NOS 1962 (Gm=1800/1800) (1.4/1.4ma) 1% section balance
(!!!!!) (Best Bugle Boy 1965) 12AX7=ECC83 Amperex Bugle Boy Holland "o" getter halo NOS 1965 (1.2ma/1.3ma)
(!!!!!) (Best Overall Pair) 12AX7A Mullard England International "10M Master Series" NOS 1972 (1.1/1.2ma and 1.2/1.3ma) 1-3% matched - Best Mullard 12AX7 pair you can buy
(!!!!!) (Best Overall Pair) CV4004=12AX7 Mullard box plates NOS 1981 (1.0/1.1ma and 1.1/1.1ma) 1% matched
(!!!!!) (Best Overall RCA Pair 1968) 12AX7A RCA CMI gray ribbed plates NOS 1968 same date codes (best tone) (1.1/1.2ma and 1.1/1.2ma) 1-2% matched
(!!!!!) (Best Overall Single) 12AX7=ECC83 Mullard UK ribbed plates NOS 1967 rebranded ECC83 Telefunken (1.2/1.5ma and Gm=1800/1900)
(!!!!!) (Best Pair for the money) 12AX7=ECC83 Fisher Telefunken Germany <> bottom smooth plates used/very good 1963-1964 era (.9ma/1.0ma and 1.0/1.0ma)
(!!!!!) (Best Pair) 12AX7 Telefunken Germany <> bottom smooth plates like new 1960's (1.1/1.3ma and 1.1/1.4ma)
(!!!!!) (BEST PAIR) 12AX7=ECC83 Amperex Bugle Boy Holland NOS 1965-1966 red-tip mil-grade (1.0/1.0ma and 1.0/1.1ma)
(!!!!!) (Best Siemens Pair) ECC83=12AX7 Siemens Halske Germany NOS 1967 1-3% matched (1.0/1.2ma and 1.0/1.0ma)
(!!!!!) (Best Single) 12AX7=ECC83 Mullard UK ribbed plates NOS 1967 rebranded ECC83 Telefunken (1.2/1.2ma and Gm=1700/1800)
(!!!!!) (Best Value Single) 12AX7A=ECC83 Amperex Bugle Boy Holland "o" getter halo low hours/like new 1965 (1.2ma/1.3ma)
(!!!!!) (Good Value 7025) 7025A=12AX7 IEC Mullard UK NOS 1969 (Gm=1400/1550)
(!!!!!) (Recommended Pair) 12AX7 Telefunken Germany ribbed plates NOS 1959-1962 (Gm=1500/1650 and 1600/1600)
(!!!!!) (Recommended RCA Single) 12AX7A RCA CMI gray ribbed plates NOS 1968 (Gm=1500/1500 and 0.9/1.0ma) (CMI=Chicago Musical Instrument Co.)
(!!!!!) (Recommended RCA Single) 12AX7A RCA CMI gray ribbed plates NOS 1968 (Gm=1500/1550 and 0.9/1.0ma)
(!!!!!) (Recommended RCA Single) 12AX7A RCA CMI gray ribbed plates NOS 1968 (Gm=1500/1600 and 0.9/1.1ma)
(!!!!!) (Recommended Single) 12AX7=ECC83 IEC Mullard England ribbed plates NOS 1967 (163 Series) (1.1/1.2ma and Gm=1600/1800)
(!!!!!) (Recommended Single) 12AX7=ECC83 Mullard UK ribbed plates NOS 1967 rebranded ECC83 Telefunken (1.0/1.3ma and Gm=1600/1700)
(!!!!!) (Recommended Single) 12AX7A=ECC83 IEC Mullard England ribbed plates NOS 1965 (163 Series) (1.0/1.4ma and Gm=1600/1800)
