Description
(!!!!) (Best Pair) 12AX7=ECC83 Telefunken Germany bottom ribbed plates NOS 1957-1960 (1.1/1.2ma and 1.3/1.0ma)
1 Low Noise Matched Pair) 12AX7=ECC83 Telefunken Germany <> bottom ribbed plates NOS 1957-1960 partially faded printing on each tube
1 tube) Gm=1600/1700 (1.1/1.2ma) (1960) (B3010001)
1 tube) Gm=1700/1500 (1.3/1.0ma) (1957) (B.ma.01)
Good NOS mA = 1mA+
Good NOS Gm = 1600+
Recommended for
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