(!!!!!) (Best Holland Pair) 12AX7=ECC83 Philips Holland NOS 1970-1971 (1.3/1.4ma x 2 tubes) (1-2% matched) (High Ma and Gm)
(!!!!!) (Best Holland Single - Best Value) 12AX7=ECC83 Miniwatt Dario Holland NOS 1970 (Gm=1700/1800)
(!!!!!) (Best Overall Single) 5751 Raytheon branded National black plates windmill getter halo NOS 1960's (2.4/2.6ma)
(!!!!!) (Best Pair) ECC803S=12AX7 Telefunken Ulm Germany <> bottom gold pins NOS 1967 and 1969 (1.2/1.4ma and 1.2/1.5ma)
(!!!!!) (Best Raytheon Black Plates Pair) JRP-12AX7 Raytheon Black Plates NOS 1962 (1.2/1.4ma and 1.3/1.5ma) 1-2% matched (P2)
(!!!!!) (Best Raytheon Black Plates Pair) JRP-12AX7 Raytheon Black Plates NOS 1962 (1.3/1.3ma and 1.2/1.3ma) 1-2% matched (Highest Ma and Gm)
(!!!!!) (Best Raytheon Black Plates Pair) JRP-12AX7 Raytheon Black Plates NOS 1962 (1.4/1.4ma and 1.4/1.5ma) 1-2% matched (Highest Ma and Gm)
(!!!!!) (Best Raytheon Black Plates Single) JRP-12AX7 Raytheon Black Plates NOS 1962 (Gm=1700/1700) (1.3/1.4ma) 1-2% section balance
(!!!!!) (Best Sound for the money pair) 12AX7=ECC83 Telefunken Dynaco Germany <> bottom smooth plates used/very good mid-1960's (1.0/1.1ma and 1.0/1.1ma) 1-2% matched
(!!!!!) (Best Sound for the money pair) 12AX7=ECC83 Telefunken Dynaco Germany <> bottom smooth plates used/very good mid-1960's (1.0/1.3ma and 1.1/1.2ma) 1-2% matched
(!!!!!) (Recommended Black Plate Single) JRP-12AX7 Raytheon Black Plates NOS 1962 (Gm=1700/1800) (1.1/1.3ma)
(!!!!) (2nd Best Raytheon Black Plate Pair) JRP-12AX7 Raytheon tall-ribbed "Black Plates" NOS 1962 (1.0/1.2ma and 1.0/1.2ma) 1-2% matched (P7)
(!!!!) (Best Overall 7025) 7025 RCA NOS 1965-1970 era (Gm=1600/1700) (1.1/1.1ma) 1-2% section balance
(!!!!) (Best Overall Pair) CV4004=12AX7 Mullard box plates NOS 1981 1-2% (1.3/1.4ma and 1.2/1.5ma)
(!!!!) (Best Overall Single) 12AX7 Fisher Telefunken Germany <> bottom smooth plates like new 1965 (Gm=1700/1700) (1.1/1.3ma)
(!!!!) (Best Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1965 1% section balance (Gm=1650/1650) (1.1/1.1ma)
(!!!!) (Best Tungsram Pair) ECC83=12AX7 Tungsram Hungary NOS 1972-1973 (Gm=1600/1900 and 1700/1900) 2-3% matched
(!!!!) (Best Value 12AX7 Mullard) ECC83=12AX7 Mullard Electrohome ribbed plates 1963 (161 series) used/good in white box (Gm=1400/1500) (0.8ma/0.8ma)
(!!!!) (Best Value like new) ECC803S=12AX7 Telefunken Ulm Germany <> bottom low hours/like new condition 1967 reboxed (Gm=1600/1700) (1.0/1.2ma)
(!!!!) (Best Value Single) 12AX7 Telefunken Germany smooth plates used/good 1960's (Gm=1500/1700) (0.8/1.2ma)
