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(!!!!) (Best Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.5/10ma and 13.2/9.8ma) (best sound)

(!!!!) (Best Pair) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (12.5/10ma and 13.2/9.8ma) (best sound)

$ 139.99

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

1 tube) 12.5ma Gm=5300 and 10ma Gm=6800 (triode/pentode) 

1 tube) 13.2ma Gm=5400 and 9.8ma Gm=6500 (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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