(!!!) (Recommended Pair) 6AC7 RCA NOS 1950's (11.5ma and 12.2ma)
$21.99
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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
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