(!!!!) (Best Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new (2.1/2.0ma and 2.1/2.1ma) 1-2% matched (Same Gm)
1 low noise pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good faded printing in white boxes
1 tube) 2.1/2.0ma Gm=1500/1400
1 tube) 2.1/2.1ma Gm=1400/1500
- Smooth, detailed, quiet
Matched on Amplitrex
Vplate=250V
Vgrid=-4V
Good used mA range = 2 - 2.5ma
Good used Gm range = 1300-1500
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