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(!!!!) (Best Pair #3) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.0/11.4ma and 0.9/10.8ma) 1-3% matched
(!!!) (Best Value #1) 12AX7A RCA gray ribbed plates "O" getter halo NOS 1973 (1.0/0.9mA and Gm=1400/1550)
(!!!) (Best Value Single) 12AX7 Baldwin Sylvania "D" getter used/tests like new 1959 (2.1/2.0ma) (Highest mA and Gm) 1-2% section balance
(!!!!!) (Single) EF86 Amperex Bugle Boy Holland NOS 1963 (3.5ma)
(!!!) (Best Single #3) 12AX7A Sylvania NOS 1970's (Gm=2400/2600 and 1.6/1.9ma)
(!) (Good Value) 12AX7WXT Sovtek NOS 1990's (Gm=1500/1400 and 0.9/0.8ma)
(!!!) (Good Value Single) 12AX7A RCA Magnavox ribbed plates used/good 1961 (Gm=1500/1900 and 0.8/1.3ma)
12SA7GT Mullard Holland used/good 1960 (3.8ma)
(!!) 12AX7 Baldwin Sylvania "D" getter used/tests like new 1959 (1.9/1.9ma) 1% section balance
(!!) (Good Value Single) 12AU7 Amperex "Hewlett Packard" Holland "o" getter halo used/good 1968 (8.2/8.4ma)
(!!!) (Best Value Single) 12AX7=ECC83 SIEMENS HALSKE GERMANY used/good 1967 (0.8/0.9ma)
(!!) (Best Single) 12AX7A Westinghouse pinched gray plates "D" getter NOS 1965 (1/1ma and Gm=1600/1700) 1-2% section balance
(!!!!) (Best Pair #2) E80CC=6085 Philips Holland 1963-1972 (6.1/6.8ma and 6.2/7.1ma) (Highest mA and Gm)
(!!!!) (Best Value Pair) 12AX7A RCA gray ribbed plates NOS 1968-1974 (best tone) (0.8/0.9ma and 0.8/1.0ma) (Fender, Rogue, McIntosh, CJ)
(!!!!!) (Best Pair #1) E80CC=6085 Philips Miniwatt and Mullard SQ Holland 1962-1967 (6.7/7.1ma and 6.7/7.2ma)
(!!!!) (Best Holland Single) EZ80=6V4 Philips Miniwatt Sittard Holland large "D" getter NOS 1957 (64/40 and 64/40)
EL84 Philips Holland NOS 1970 (42ma)
(!!!!!) (Slightly Microphinic Single 1962) 12AX7A Mullard UK branded KNIGHT NOS 1962 (1.3/1.1mA and Gm=1800/1800)
(!!!) (Set of 10 tubes) 12AT7 GE NOS 1961 (set of 10 individual tubes)
(!!!!) (Single) 12AU7 EI Yugoslavia (Telefunken copy) smooth plates branded Philips NOS 1974 (8.2/7.8ma) (High Gm)
