(!!) (recommended Pair) 6BL7GTA GE NOS 1966-1970 (47/50ma and 42/51ma)

(!!) (recommended Pair) 6BL7GTA GE NOS 1966-1970 (47/50ma and 42/51ma)

By Tube World

$ 26.99

1 pair) 6BL7GTA GE NOS 1966 (EV)

1 tube) 47/50ma Gm=8200/8300 (EV) 1966)

1 tube) 42/51ma Gm=7700/7800 (1970 era)




Good Ma = 32-40ma

Good Gm = 6200 - 7000


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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