(!!!!) (Best Value Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1953 (6.4/7.0ma and 7.0/6.4ma) 1-2% matched

1 low noise pair) 6SN7GTA GE NOS "U" getter halo - copper grid posts - tubes are etched 6SN7GTA - 1953 date codes 1 tube) 7.0/6.4ma Gm=2400/2300  1 tube) 6.4/7.0ma Gm=2300/2400 slightly tilted glass   Good Ma rnage 6-10ma Good Gm range 2300-2600   - very good detail, inner resolution and air - a good balance between detail (Sylvania) and warmth (RCA)   - Atma-sphere UV-1 Preamp