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(!!!!!) (Best Overall Single) ECC83=12AX7 Telefunken Germany smooth plates NOS 1965 (1.3/1.5ma and Gm=1800/2000) (Highest mA and Gm)
(!!!!!) (Best Overall Single) ECC83=12AX7 Telefunken Germany smooth plates NOS 1965 (1.3/1.5ma and Gm=1800/2000) (Highest mA and Gm)
$ 249.99
1 low noise tube) 12AX7=ECC83 Telefunken Germany smooth plates NOS (B2205901=1965) fair to good printing - date code on tube matches date code on box
1 section) 1.3ma Gm=1800
1 section) 1.5ma Gm=2000
Good NOS Ma = 1.0mA+
Good NOS Gm = 1600+
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