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(!) (Recommended Pair) 6BL7GTA Sylvania Zenith 1963 and 6BL7GT Sylvania 1960 era NOS (38.5/34ma and 33/37ma)
(!) (Recommended Pair) 6BL7GTA Sylvania Zenith 1963 and 6BL7GT Sylvania 1960 era NOS (38.5/34ma and 33/37ma)
$ 24.99
1 pair) 6BL7GTA Sylvania Zenith NOS 1963 and 6BL7GT Sylvania NOS 1960 era - same build - triple mica
1 tube) 38.5/34ma Gm=7100/6700 Sylvania/Zenith "O" getter 1963 6BL7GTA
1 tube) 33/37ma Gm=6500/6900 Sylvania "D" getter 1960 era 6BL7GT
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)
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 (Recommended Pair) 6BL7GTA Sylvania Zenith 1963 and 6BL7GT Sylvania 1960 era NOS (38.5/34ma and 33/37ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_ce2f633f-946b-4e3b-a14a-bea11bdb311d.jpg?v=1732088334){kind=link}
 (Recommended Pair) 6BL7GTA Sylvania Zenith 1963 and 6BL7GT Sylvania 1960 era NOS (38.5/34ma and 33/37ma) "Pin It")