(!!!!!) (Best Single #3) ECC83=12AX7 Telefunken Germany ribbed plates used/tests like new 1953-1955 (1.3/1.1ma and Gm=1700/1600) 1-5% section balance Title: ECC83=12AX7 Telefunken Germany

1 low noise tube) ECC83=12AX7 Telefunken Germany ribbed plates used/tests like new 1953-1955 (pd) fairly good printing – in white box

1 section) 1.3ma Gm=1700

1 section) 1.1ma Gm=1600

Good NOS Ma = 1.0ma+

Good NOS Gm = 1500-1600+

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