(!!!!) (Best Overall Single) JG-6072 GE NOS triple mica black plates "U" getter halo 1956 (2.6/2.6ma) 1% section balance (Blue-Tip = medical grade)
1 low noise pair) JG-6072 GE NOS triple mica black plates "O" getter halo
(56-13=1956) Blue-Tip=medical grade
2.6ma Gm=1700
2.6ma Gm=1700
Tested on Amplitrex
Vplate=250V
Vgrid=-4V
Good Ma range = 2 - 3ma
Good Gm range = 1500-1600
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 (Best Overall Single) JG-6072 GE NOS triple mica black plates "U" getter halo 1956 (2.6/2.6ma) 1% section balance (Blue-Tip = medical grade)&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/1_1b2e86c4-2eac-4a58-88bb-9b722afd5abf.jpg?v=1596638222){kind=link}
 (Best Overall Single) JG-6072 GE NOS triple mica black plates "U" getter halo 1956 (2.6/2.6ma) 1% section balance (Blue-Tip = medical grade) "Pin It")