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6SC7 GE NOS 1970 era (1.6/1.7ma) 1-2% section balance
(!!) (Best Pair) ECC40 Philips NOS made by La Radiotechnique, Chartres/France 1969 (6.5/6.5ma and 6.8/6.7ma) 1-3% matched
ECC40 Philips NOS made by La Radiotechnique, Chartres/France 1969 (6.2/6.9ma)
5718 GE NOS 1970's branded United 1984 (4 in stock)
(!!!) (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
(!!!) (Best Pair) 12BA6 Westinghouse NOS 1960 era (9.8ma / 10.4ma)
12BA6 Westinghouse NOS 1951 (10.4ma)
(!!!!!) (Best Single 1953) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 like new (2.3/2.2ma) (V1 guitar amp, mics, Audio Note) 1-2% section balance
(!!!) (Best Value) 12AU7=ECC82 Daystrom Mullard UK ribbed plates like new 1963 (9.0/10.2ma) (162 series) (smooth presentattion)
(!!!!) (Best Overall Single) ECC802S=12AU7 Telefunken Germany <> bottom NOS 1970 good printing (11.6ma and 11.5ma) (same Gm) 1-2% section balance
(!!!!) (Best Single #2) 6SN7GTB RCA NOS 1957-1958 (8.8/9.6ma)
(!!!) (Best Pair #2) ECL82=6BM8 Mullard UK branded Mazda NOS 1970's (2.0/36ma and 2.0/35ma) 1-2% matched
(!!!) (Best Pair #3) ECL82=6BM8 Mullard UK branded Mazda NOS 1970's (2.2/34ma and 2.0/33ma) 1-3% matched
