6SN7GTBBranded Hit-RayIttRound TipBaseBlackBottle HeightHalfBottle ShapeSkinny BottleCode On Tube6-7CountryJapanGetterO-Getter HaloGlass ColorClear GlassMicaDoublePermanentid2kmg1wblopPin ColorSilver PinsPlate ColorBlackPlate LookRibbed / ScaleTip ShapeRound TipMore 6SN7GTB type tubes6SN7GTBBranded Relco6SN7GTBBranded Sylvania6SN7GTBBranded RCA6SN7GTBBranded Sylvania6SN7GTBBranded Amperex6SN7GTBBranded Ge6SN7GTBBranded CEI6SN7GTBBranded PhilipsRogers6SN7GTBBranded RCA6SN7GTBBranded WestinghouseMore tubes branded Hit-Ray12AX7ABranded Hit-RayHitachi6L6GCHitachiBranded Hit-Ray12AU7HitachiBranded Hit-RayMore tubes branded IttGZ34MullardBranded IttEL84Branded Itt12AX7Branded IttECC83, 12AX7ABranded IttLtt6CA7HitatchiBranded Itt12AX7Branded Itt12AX7BrimarBranded Itt
