12SN7GTA Westinghouse gray plates "O" getter NOS 1964 (7.6/8.0ma)
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12SN7GTA Westinghouse gray plates "O" getter NOS 1964
7.6ma Gm=2700
8.0ma Gm=2800
- Mapletree
- McAlister Audio MA-10
- Tom Tutay preamp
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