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(!!!!) (Recommended Pair) 12AX7 Telefunken Germany <> bottom ribbed plates used/very good 1960 era (1.0/1.2ma and 1.0/1.1ma) 1-5% matched (highest mA and Gm)

(!!!!) (Recommended Pair) 12AX7 Telefunken Germany <> bottom ribbed plates used/very good 1960 era (1.0/1.2ma and 1.0/1.1ma) 1-5% matched (highest mA and Gm)

By Tube World Express

$ 229.99

1 Low Noise pair) 12AX7=ECC83 Telefunken Germany <> bottom ribbed plates used very good 1960 era in white boxes

1 tube) Gm=1600/1700 (1.0/1.2ma) no printing

1 tube) Gm=1500-1600 (1.0/1.1ma) some printing "ECC83"

 

NOS mA = 1mA+

NOS Gm = 1600+

 

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