1 low noise pair) 6SN7GTB GE used/good 1956-1957 in white boxes
1 tube) 6.6/7.3ma Gm=2400/2500 (1957) “”Organ ?”” etched on base – see photo
1 tube) 7.6/6.8ma Gm=2500/2400 (1956) slightly tilted glass
Good used mA range 6-8ma
Good used Gm range 2200-2500
Best Value 6SN7GTB
– smooth and sweet sound
– Schiit Freya


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