(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1964 (85.5ma and 86.0ma) (these are some of the best sounding 6B4G ever made)

$ 88.88

1 matched pair) 6C4C=6B4G Russian NOS original boxes 1963-1964

1 tube) 85.5ma Gm=6600 (1963) small rattle inside base - dried glue particles

1 tube) 86.0ma Gm=6650 (1964) small rattle inside base - dried glue particles

Internal construction superior to American made 6B4G


Test Data:



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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