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1 pair) 6AU6A GE NOS 1970's
1 tube) 6.7ma Gm=4500
1 tube) 6.7ma Gm=4400
Good Ma range 6.5-7.5ma
Good Gm range 4000-4500
 (Best Pair #2) 6AU6A GE NOS 1970's (6.7ma and 6.7ma) 1-2% matched (Sony C800G mic) "Pin It")
 (Best Pair #2) 6AU6A GE NOS 1970's (6.7ma and 6.7ma) 1-2% matched (Sony C800G mic)&Category=&ImageURL=http://tubeworldexpress.com/cdn/shop/files/6_1b539d06-c9c7-403c-a0be-d935d24bccc4.jpg?v=1791556728){kind=link}