(!!!!) (Recommended Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952-1953 (6.6/7.8ma and 6.6/8.2ma) (close Gm) 1-3% matched

1 low noise pair) 6SN7GTA GE NOS "U" getter halo - copper grid posts - 1952-1953 slightly tilted glass

1 tube) 6.6/7.8ma Gm=2400/2600 

1 tube) 6.6/8.2ma Gm=2400/2500  

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