(!!!) (Best Pair) 6BL7GTA Sylvania branded GE NOS 1967-1968 (42.5/39.5ma and 40.2/43.2ma)
$ 27.99
1 matched pair) 6BL7GTA Sylvania branded GE NOS 1967-1968
1 tube) 42.5ma/39.5ma Gm=7500/7400
1 tube) 40.2ma/43.2ma Gm=7600/7950
Matched on Amplitrex
Vplate=250V
Vgrid=-9V
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)
See more: vacuum tube
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 (Best Pair) 6BL7GTA Sylvania branded GE NOS 1967-1968 (42.5/39.5ma and 40.2/43.2ma) "Pin It")