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(!!!!!) (Best Overall Pair) ECC83=12AX7 Telefunken Germany smooth plates NOS 1965-1967 (1.3/1.1ma and 1.3/1.1ma) (phono grade) 1% matched (Same Gm)

(!!!!!) (Best Overall Pair) ECC83=12AX7 Telefunken Germany smooth plates NOS 1965-1967 (1.3/1.1ma and 1.3/1.1ma) (phono grade) 1% matched (Same Gm)

$ 548.88

1 low noise pair) 12AX7=ECC83 Telefunken Germany <> bottom smooth plates NOS 1965-1967 in white boxes

1 tube) 1.3/1.1ma Gm=1700/1600 good printing (B6107301) 7 = year = 1967

1 tube) 1.3/1.1ma Gm=1700/1600 good printing (B2005701) 5 = year = 1965


 

Good NOS Ma = 1.0mA-1.2mA+

Good NOS Gm = 1500-1800+


 

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