(!!!) (Best Pair) 6B4G Sylvania rebranded GE 1952 separate plates NOS (87ma and 87.5ma) (High Ma and Gm)
Was $129.99
SAVE 23%
$99.99
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1 pair) 6B4G Sylvania rebranded GE 1952 separate plates NOS 1 tube) 87.0ma Gm=6800 branded GE 1955 1 tube) 87.5ma Gm=6850 branded GE 1956 Test Data: Vplate=225V, Vgrid=-30V (NOS used Ma range 70-90ma) (NOS used Gm = 4500-5000) Technical Information (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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Price History
$180
$149.99
(-$30.01)
$149.99
$129.99
(-$20)
$129.99
$99.99
(-$30)