(!!!) (Recommended Pair) 6AC7 RCA NOS 1970 era (10.0ma and 10.5ma)

1 pair) 6AC7 RCA NOS 1970 era

1 tube) 10.0ma Gm=9500

1 tube) 10.5ma Gm=10,000

Good Ma range 7-10ma

Good Gm = 8000-9000

- Mr. Liang Audio 845-3
- Welbourne Laurel IIx SET (WE 300B)
- JAS Bravo 2.3 integrated amp