Home » (!!!!) (Pair Pair #2) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (86ma and 83.5ma)

(!!!!) (Pair Pair #2) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (86ma and 83.5ma)

$ 94.99

1 matched pair) 6B4G Raytheon NOS 1940's - separate plates - same build - 1 tube branded Tungsol - same height

1 tube) 83.5ma Gm=5700 Raytheon 1940's

1 tube) 86.0ma Gm=5800 Tungsol 1946

Test Data:

Vplate=225V

Vgrid=-30V

GOOD NOS Ma range 70-90ma

GOOD NOS Gm = 5200

Recommended for

(6B4G=6.3V filament)
(6B4G is electrically equivalent to 6A3, but 6A3 has UX-4 pin base and 6B4G has 8 pin octal base)
(The best sounding 6B4G are 1940's-1950's: Ken Rad, Tungsol, Sylvania, Raytheon)

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