(!!!) (Recommended Pair) 6AC7 RCA NOS 1950's (11.5ma and 12.2ma)

1 pair) 6AC7 RCA NOS 1950's

1 tube) 11.5ma Gm=10,400 (KF) 1950's

1 tube) 12.2ma Gm=10,000 (57-26=1957)

TUBES PLUGGED INTO OCTAL SOCKETS IN PHOTO

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