(!!) (Best used single) 12AT7 Telefunken Diamond Bottom used/good early 1960's (9.0ma/9.4ma)

1 low noise tube) 12AT7 Telefunken Diamond Bottom used/good early 1960's in WB

1 section) 9.0ma Gm=5200

1 section) 9.4ma Gm=5400

Good used mA range 7-9ma

Good used Gm range 4000-5500

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