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(!!!) 6B4G Tungsol NOS 1940's (81ma)

(!!!) 6B4G Tungsol NOS 1940's (81ma)

By Tube World

$ 79.99

6B4G Tungsol coated glass NOS 1940's

81ma

Gm=6100

 

 

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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