(!!!) 6DE7 GE Great Britain made in Japan NOS 1970 (3.8/30ma) (Woo Audio)

6DE7 GE Great Britain made in Japan by Hitachi NOS 1970

3.8ma Gm=1900

30ma Gm=6000

Tested on Amplitrex

Good Ma / Gm = 4.5-5.5ma Gm=1800-2000

Good Ma / Gm = 30-40ma Gm=6000-7000

6DE7 is a dual triode with a High-M triode section and a Low-Mu triode section

– Woo Audio WA6SE (2008-present)