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(!!!!!) (Best Overall Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.6/11ma and 12.0/10.8ma) 1-5% matched (Highest mA and Gm) (best sound)
(!!!!!) (Best Overall Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.6/11ma and 12.0/10.8ma) 1-5% matched (Highest mA and Gm) (best sound)
$ 139.99
1 pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 faded printing
1 tube) 12.6ma Gm=5300 and 11.0ma Gm=6600 (triode/pentode)
1 tube) 12.0ma Gm=5000 and 10.8ma Gm=67000 (triode/pentode)
Matched on Amplitrex
Good Triode Ma/Gm=11-14ma Gm=4500-5000
Good Pentode Ma/Gm=8-10ma Gm=5500-6000
Recommended for
- McIntosh MR67, MR71 FM Stereo tuner
- Telefunken radio
- Graaf GM 100 amplifier
- HH Scott 350 Tuner 1961-2
See more: vacuum tube
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 (Best Overall Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.6/11ma and 12.0/10.8ma) 1-5% matched (Highest mA and Gm) (best sound)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_0bb41956-3161-4e35-b44f-5095c1e7f661.jpg?v=1762933784){kind=link}
 (Best Overall Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.6/11ma and 12.0/10.8ma) 1-5% matched (Highest mA and Gm) (best sound) "Pin It")