(!!!) (Best Pair #3) 6GU7 RCA NOS 1970-1971 (10/13ma and 11/12ma)
$ 21.99
1 pair) 6GU7 RCA NOS 1971-1972 same build
1 tube) 10/13ma Gm=3100/3600
1 tube) 11/12ma Gm=3200/3300
for:
Moscode 401HR amp and 402Aa amp
Moscode 150 modified
Singlepower PPX3 SLAM
Audio Research D-79 amp
See more: vacuum tube
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 (Best Pair #3) 6GU7 RCA NOS 1970-1971 (10/13ma and 11/12ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_470b0676-194b-4d5f-bd60-975856c43c77.jpg?v=1715786326){kind=link}
 (Best Pair #3) 6GU7 RCA NOS 1970-1971 (10/13ma and 11/12ma) "Pin It")