(!!!) (Best Value Pair) 6SN7GTB RCA coin-base black plates 1970-1975 (8/10ma and 9.8/8ma)

1 low noise pair) 6SN7GTB RCA coin-base black plates 1970-1975

1 tube) 8/10ma Gm=2900/3100 

1 tube) 9.8/8ma Gm=3100/3000

Good Ma range 7-9ma

Good Gm range 2300-2600

best for:

- Modwright Oppo 105D

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- Schiit Freya