(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)
$ 47.99
1 low noise pair) 6FQ7 Sylvania NOS 1970's same build
1 tube) 6.4/6.8ma Gm=2300/2300 branded RCA
1 tube) 6.4/6.4ma Gm=2200/2300
Matched on Amplitrex
Vplate=250V
Vgrid=-8V
Good Ma = 6-9ma
Good Gm = 2300-2500
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See more: vacuum tube
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 (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_2eed45b9-089a-4e6d-a7c7-f767339ae1f5.jpg?v=1662661563){kind=link}
 (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma) "Pin It")