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(!!!) (Best Pair #3) 6BL7GTA Sylvania black plates triple mica NOS 1960 era (32.8/34ma and 34.5/35.6ma) (close Gm matching)
(!!!) (Best Pair #3) 6BL7GTA Sylvania black plates triple mica NOS 1960 era (32.8/34ma and 34.5/35.6ma) (close Gm matching)
$ 27.99
1 pair) 6BL7GTA Sylvania black plates triple mica NOS 1960
1 tube) 32.8/34.0ma Gm=6600/6700 (red)
1 tube) 37.5/38.6ma Gm=6750/7000 (yellow)
Tested on Amplitrex
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 #3) 6BL7GTA Sylvania black plates triple mica NOS 1960 era (32.8/34ma and 34.5/35.6ma) (close Gm matching) "Pin It")