(!!!!) (BEST OVERALL PAIR) 5670W GE NOS 1986 (8.2/8.2ma and 8.4/8.2ma) 1-2% matched
(!!!) (Slightly Microphonic Single) 5670=2C51 Tungsol black plates "D" getter NOS 1958 (9.6/10.2ma)
(!!) (Single) 2C51 Tungsol black plates "O" getter halo tests like new 1960's faded printing (7.6/7.0ma)
(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)
(!!!) (Best Single) 5670 RCA NOS 1970 (13/10.6ma) (Highest mA and Gm)
(!!!) (Recommended single 1954) 5670 GE triple mica with D getter halo NOS 1954 (7.4/8.2ma)
(!!!!) (Single) 5670W GE JAN NOS 1986 (9.8/11.6ma)
(!!!!) (Best Pair #2) 5670W GE NOS 1986 (8.0/7.2ma and 8.0/7.4ma) (same Gm) 1-2% matched
(!!!!) (Single) 5670W GE JAN NOS 1986 (8.6/8.8ma)
(!!!) (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
(!!) (Single) JAN-5670W GE used/good 1970's (6.8/6.0ma)
