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(!!!!!) (Best Pair #2) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (11.5/9.6ma and 12.2/9.5ma) (best sound) 1-3% matched

(!!!!!) (Best Pair #2) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (11.5/9.6ma and 12.2/9.5ma) (best sound) 1-3% matched

$ 119.99

1 pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 fairly good printing

1 tube) 11.8ma Gm=5200 and 9.0ma Gm=6100 (triode/pentode) 

1 tube) 12.4ma Gm=5400 and 9.4ma Gm=6100 (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

 

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