(!!) (Recommended pair) E83F=6689 Philips SQ Holland NOS gold pins 1974 (9.4ma and 9.6ma)
By Tube World
$ 74.99
1 pair) E83F=6689 Philips SQ Holland NOS gold pins 1974
1 tube) 9.4ma and Gm=8200
1 tube) 9.6ma and Gm=8900
NOS Ma = 9-10ma
NOS Gm = 8500-9000
(10,000+ hour low noise Pentode)
- Telefunken v76 preamp
See more: vacuum tube
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 (Recommended pair) E83F=6689 Philips SQ Holland NOS gold pins 1974 (9.4ma and 9.6ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_b661172b-ec78-40c6-a301-caadaa981b1b.jpg?v=1709174507){kind=link}
 (Recommended pair) E83F=6689 Philips SQ Holland NOS gold pins 1974 (9.4ma and 9.6ma) "Pin It")