ECF80=6BL8 Telefunken Germany <> bottom used/good 1964 (nf)

triode section) 10.0ma Gm=4100

pentode section) 10.2ma Gm=7000

Recommended for

- McIntosh MR67, MR71 FM Stereo tuner
- Telefunken radio
- Graaf GM 100 amplifier
- HH Scott 350 Tuner 1961-2