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(!!!!) (Best Pair for the money) 5687 and 5687WA Tungsol black plates large "U" getter test like new 1950's (36.8/38ma and 36.5/35ma) (highest Ma and Gm)
(!!!!) (Best Pair for the money) 5687 and 5687WA Tungsol black plates large "U" getter test like new 1950's (36.8/38ma and 36.5/35ma) (highest Ma and Gm)
$ 99.99
1 low noise pair) 5687 and 5687WA Tungsol black plates large "U" getter test like new 1950's in white boxes - faded printing on glass - same build
1 tube) 36.8/38ma Gm=11,200/11,800 (5687) 1950's
1 tube) 36.5/35ma Gm=11,900/11,300 (USN-5687WA) 1956
Good used Ma = 30ma
Good used Gm = 10,000
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
See more: vacuum tube
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 (Best Pair for the money) 5687 and 5687WA Tungsol black plates large "U" getter test like new 1950's (36.8/38ma and 36.5/35ma) (highest Ma and Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shopifycloud/shopify/assets/no-image-2048-5e88c1b20e087fb7bbe9a3771824e743c244f437e4f8ba93bbf7b11b53f7824c.gif){kind=link}
 (Best Pair for the money) 5687 and 5687WA Tungsol black plates large "U" getter test like new 1950's (36.8/38ma and 36.5/35ma) (highest Ma and Gm) "Pin It")