Model 6SN7GTB. Manufacture Date 1957-1958 — Sylvania plant, tube manufactured 1957 or 1958. Condition Tested as NOS. ALL TUBE AUDIO. Minimum Good Value: 50/50.
Item Tag: 6SN7GTB
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(2) Sylvania 6SN7GTB Chrome Dome 3 Hole Black Plate Late 1950s Tests Strong
Tube 1 Emissions 91% & 95% | GM 103% & 103%. Tube 2 Emissions 87% & 112% | GM 107% & 100%.
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Sylvania 6SN7GTB NOS/NIB vacuum tubes matched & guaranteed identical codes
Sylvania NOS 6SN7GTB Vacuum Tubes. For sale I have an exceptional matched pair of new in original box Sylvania coin base 6SN7GTB vacuum tubes. I really like these 1960 production GTBs. Linear with excellent noise characteristics.
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Matched Pair +1 RCA 6SN7GTB Staggered Black Plate Tubes Balanced STRONG 3pc 6SN7
RCA 6SN7GTB. Matched Pair +1.
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Pair 1957 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 90/90 and 85/85 where a new tube tests 85/85.
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1 NOS Zenith 6SN7GTB Vacuum Tube – Brown Base Audio Twin Triode Made in Canada
1 NOS Zenith 6SN7GTB Vacuum Tube. Hickok TV-7D/U tests read 118/118. This tube features ribbed gray plates, copper grid pins, a round getter on the side and a low-loss brown Micanol base.
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Matched Quad (4) Sylvania 6SN7GTB Black V Plate Tubes 539C&Maxi Test NOS NIB🌊
Matched Quad (4) Sylvania 6SN7GTB Black V Plate O Top Getter Tubes 539C&Maxi Tested NOS NIB. Near perfectly matched for both GM and MU (Gain). Nice shiny getters and pins. Date codes are also matching.
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Tung-Sol 6SN7GTB D Getter Pair Low Noise Preamp Tubes
We cannot be responsible for what tubes test in another tester.
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Pair Sylvania Black Plate Chrome Top 6SN7GTB Tubes STRONG! 6SN7
These tubes test 86/86 and 88/88 where a new tube tests 85/85.