(!!!!) (Best Value Pair) 5670W=396A GE NOS 1986 (7.0/9.8ma and 7.4/9.8ma)
(!!!!) (Recommended Pair) 5670W GE NOS 1986 (7.6/9.0ma and 8.0/9.4ma) 1-3% matched
(!!!!) (Best Overall Single) 5670W GE JAN NOS 1986 (9.8/10ma)
5670=2C51 GE black plates "D" getter halo used/good 1950's (7.2/8.0ma) (same Gm)
(slightly microphonic) 5670 RCA NOS triple mica "O" getter halo 1961 (7.6/10.8ma)
(!!!) (Single) JG-5670 GE D getter halo 1956 like new (8.3/10ma)
2C51=396A GE "D" getter NOS 1950's rebranded United National 396A in 1987 (13.6/7.3ma)
(!!!!) (Recommended Pair) 5670W GE NOS 1986 (7.4/8.6ma and 7.8/8.8ma)
(!!!!) (Best Pair) 5670W GE NOS 1986 (8.4/8.2ma and 8.4/8.6ma) 1-3% matched
(!!!) (Best Single) JG-5670WA GE triple mica with D getter halo NOS 1956 (6/6ma)
(!!!!) (Single) 5670W GE JAN NOS 1986 (9.8/11.6ma)
(!!!!) (Recommended Single) 5670W GE JAN NOS 1986 (8.6/9.2ma)
(!!!!) (Single) 5670W GE JAN NOS 1986 (8.6/8.8ma)
(!!!) (Best Single 1956) JG-5670WA GE triple mica with D getter NOS 1956 (7.8/7.0ma)
(!!!) (Single) JG-5670WA GE triple mica with D getter NOS 1956 (5.5/5.8ma) (same Gm)
(!!!) (Best Single) JHS-5670 Sylvania NOS 1966 (12/10ma)
(!!!) (Single) JHS-5670 Sylvania NOS 1966 (7.0/6.8ma)
(!!!) (SINGLE) 5670 RCA NOS "O" getter triple mica 1960 era used/good (6.6/7.2ma)
(!!!!!) (Best Pair) 5670W GE NOS 1986 (8.4/9.4ma and 8.6/9.2ma) 1-3% matched