Description
(!!) (Best Single 1966) ECC83=12AX7 Siemens Halske Germany NOS 1966 (162 Series) (Gm=1500/1600 and 1.0/1.1ma)
1 low noise tube) ECC83=12AX7 Siemens Halske Germany NOS 1966 (162 Series) in white box
1 section) 1.0ma Gm=1500
1 section) 1.1ma Gm=1600
NOS Ma 1mA+
NOS Gm 1500-1600+
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