(!!!!!) (Best Black Plate Single) JRP-12AX7 Raytheon Black Plates NOS 1962 (Gm=1800/1800) (1.4/1.4ma) 1% section balance
(!!!!!) (Best CV4004 Single) CV4004=12AX7 Brimar England NOS 1960's (Gm=1700/1800) (1.3/1.4ma)
(!!!!!) (Best GE Single) JAN-12AX7WA GE NOS 1967-1968 (Gm=1700/1800 and 1.5ma/1.6ma) (Highest Ma and Gm)
(!!!!!) (Best Overall Pair) 12AX7 GE NOS 1972 (1.4/1.6ma and 1.5/1.5ma) (Matchless, Fender, Tow-Rock, Dumble, VOX, Supro)
(!!!!!) (Best Overall Pair) CV4004=12AX7 Mullard box plates NOS 1981 (1.0/1.1ma and 1.1/1.1ma) 1% matched
(!!!!!) (BEST OVERALL SINGLE) 7025 Amperex Globe Logo Holland NOS 1967 (Gm=1900/2100 and mA=1.8/1.9ma)
(!!!!!) (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=CV4004 BRIMAR England tall narrow ribbed plates NOS 1960's (1.2/1.5ma and 1.3/1.6ma)
(!!!!!) (Best Pair) 12AX7=CV4004 BRIMAR England tall narrow ribbed plates NOS 1960's (1.3/1.6ma and 1.3/1.5ma)
(!!!!!) (Best Pair) 12AX7=ECC83 GE NOS 1969 (1.0/1.1ma and 1.0/1.2ma) (Matchless, Fender, Tow-Rock, Dumble, VOX, Supro)
(!!!!!) (Best RCA Pair 1968) 12AX7A RCA CMI gray ribbed plates NOS 1968 same date codes (best tone) (1.0/1.0ma and 1.0/1.0ma) 1% matched
(!!!!!) (Best Siemens Pair) ECC83=12AX7 Siemens Halske Germany NOS 1967 1-3% matched (1.0/1.2ma and 1.0/1.0ma)
(!!!!!) (Best Value Single) 12AX7 IEC Mullard UK NOS 1965 copper grid posts (0.7/1.2ma and Gm=1400/1700)
(!!!!!) (Best Value Single) 12AX7 Mullard branded "M" UK used/good 1961 copper grid posts (0.7/.8ma and Gm=1400/1500) (161 series)
(!!!!!) (Recommended Pair) 12AX7 Telefunken Germany ribbed plates NOS 1959-1962 (Gm=1500/1650 and 1600/1600)
(!!!!!) (Recommended Pair) 12AX7=CV4004 BRIMAR England tall narrow ribbed plates NOS 1960's (1.1/1.3ma and 1.0/1.2ma)
(!!!!!) (Recommended Pair) 12AX7=CV4004 BRIMAR England tall narrow ribbed plates NOS 1960's (1.2/1.3ma and 1.4/1.5ma)
(!!!!!) (Recommended Pair) 12AX7=ECC83 Amperex Bugle Boy Holland used/good 1960 same date codes (.9/.9ma and .9/1.0ma)
(!!!!!) (Recommended Pair) 12AX7=ECC83 Amperex Bugle Boy Holland used/good 1962 (1.1/1.2ma and 1.2/1.2ma) 1-2% matched
(!!!!!) (Recommended Pair) 12AX7=ECC83 GE NOS 1969 (1.0/1.0ma and 1.0/1.1ma) (Matchless, Fender, Tow-Rock, Dumble, VOX, Supro)
