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(!!!) (Recommended Pair) 713A Western Electric by Tungsol NOS 1942-1943 (6.6ma and 6.9ma) (713A = 717A with black base)

By Tube World

$ 59.99

1 pair) 713A Western Electric by Tungsol NOS 1942-1943
1 tube) 6.6ma Gm=3300
1 tube) 6.9ma Gm=3100 glass bulges out on one side / imperfect glass bulb / odd-shape

 

- 713A=717A with black bakelite base

 

- pins cleaned on both tubes

Vplate=100V

Vscreen=100V

Vgrid=-1V

Good Ma 5.5-8ma

Good Gm 3000-4000

- Pentode


most made by Tungsol branded Tungsol or Western Electric by Tungsol

- Yamamoto AO8 amp

See more: vacuum tube
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