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(!!) (#3 6BL7GTA Pair) 6BL7GTA GE NOS and like new 1960's same build (41.5/43ma and 44/46ma)

(!!) (#3 6BL7GTA Pair) 6BL7GTA GE NOS and like new 1960's same build (41.5/43ma and 44/46ma)

$ 19.99

1 tube) 6BL7GTA GE "O" getter around 1960's

1 tube) 44/46ma Gm=7800/8200 like new (GE) slightly tilted glass

1 tube) 42/44ma Gm=7550/7700 NOS (GE branded Westinghouse) slightly tilted glass

 

Recommended for

- Single Power MPX3 SE
- Cary 1610se

(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)
The 6BL7GTA is interchangeable with a 6BL7GT but differs from it in having
an improved section 1 for increased life as an oscillator, and controlled zero-bias
plate current in both sections
Typical Characteristics Class A Amp:
Vplate= 250V
Iplate= 42ma
Vgrid= -9
Rp= 2150 ohms
Mu= 15
Gm= 6200 for 6BL7 (RCA manual 1953) and 7000 mhos for 6BL7GTA (GE Manual 1957)
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