(!!!!) (Best Pair) 12AU7A GE NOS 1968-1969 (9/10ma and 9.2/9.2ma) (Same Gm) (Warm and smooth)
(!!!!) (Recommended Pair) 12AU7A GE NOS 1958 (9.5/9.3ma and 10.6/9.2ma) (Rogue)