7247=12DW7 GE branded RCA used/good 1960”s (0.8/9.3ma)

7247=12DW7 GE branded RCA used/good 1960”s

12AX7 Section = 0.8ma Gm=1400

12AU7 Section = 9.3ma Gm=2000

good used single

Tested on Amplitrex

12AX7 Section Good = 1-1.2ma Gm=1600-1800

12AU7 Section Good = 8-10ma Gm=1800-2200