6DX8=ECL84 Zenith Sylvania NOS 1962 (3.7mA and 20mA) (Shindo)

6DX8=ECL84 Zenith Sylvania NOS 1962

3.7ma Gm=3500

20ma Gm=9700

NOT A PAIR

Tested on Amplitrex

NOS mA/Gm triode section 3mA/3500-4000

NOS mA/Gm pentode section 18mA/9,000-10,000

Shindo Monbrison Preamp