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(!!!) (Best Value Pair) 6B4G Sylvania NOS 1952 same build (76ma and 80ma)

(!!!) (Best Value Pair) 6B4G Sylvania NOS 1952 same build (76ma and 80ma)

$ 99.99

1 matched pair) 6B4G Sylvania NOS 1952 same build

1 tube) 76ma and Gm=5500 (branded RCA) taller bottle in white box

1 tube) 80ma and Gm=5300 (branded JAN-CHS-6B4G Sylvania) slightly tilted glass in original military style box

 

Good current range 70-90ma

 

(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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