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(!!!) (Recommended Pair) 5881 Sylvania black base NOS 1979 same build (73.2ma and 74ma)
(!!!) (Recommended Pair) 5881 Sylvania black base NOS 1979 same build (73.2ma and 74ma)
By Tube World
$ 139.99
1 Matched Pair) 5881 Sylvania black base NOS 1979 same build
1 tube) 73.2ma Gm=6100 (Sylvania JAN 1979) grid heatsink - see photo
1 tube) 74.0ma Gm=6250 (Sylvania branded RCA 1979)
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