(!!!!!) (Best Single 1959) ECC83=12AX7 Telefunken Germany <> bottom ribbed plates NOS 1959 (1.1/1.0ma and Gm=1700/1600) 1-3% section balance ECC83=12AX7 Telefunken Germany ribbed plates: ECC83=12AX7 Telefunken Germany ribbed plates

1 low noise tube) 12AX7=ECC83 Telefunken Germany ribbed plates <> bottom NOS good printing (B1109601) 9=1959 – in white box

1 section) 1.1ma Gm=1700

1 section) 1.0ma Gm=1600

NOS Ma = 1.0mA+

NOS Gm = 1600+

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