(!) (BEST VALUE) 12AT7 Telefunken "Fisher" Germany Diamond bottom NOS 1964
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1 low noise pair) 12AT7 Telefunken "Fisher" Diamond Bottom NOS (pf=November,1964) in white boxes
Amplitrex Test Data:
1 tube) 6.6/7.4ma Gm=4300/4700
1 tube) 7.0/7.0ma Gm=4500/4500
Good Ma range 7-10ma
Good Gm range 4500-5500
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