(!!!!) (Recommended Pair) 5670W GE NOS 1986 (6.8/7.2ma and 6.8/8.2ma) (same Gm) 1-3% matched **
(!!!!) (Recommended Pair) 5670W GE NOS 1986 (7.2/8.6ma and 7.2/8.2ma) 1-3% matched **
(!!!!) (Recommended Pair) 5670W GE NOS 1986 (7.5/10.6ma and 7.6/10ma) 2-3% matched **
(!!!) (Best Single) 6U8A GE NOS 1975 (20ma/13.6ma) (High Ma and Gm)
(!!) (#1 5AN8 Pair) 5AN8 Hit-Ray by Hitachi Japan NOS 1960's sub for 6AN8 (1 pair)
(!!) (#2 5AN8 Pair) 5AN8 Hitachi branded Raytheon Japan NOS 1960's sub for 6AN8 (1 pair)
(!!) (Best Pair) 6EA8 Sylvania branded Zenith NOS 1962
(!!) (BEST VALUE QUAD) 6C4 Westinghouse Mexico NOS 1991 matched quad (8.8/9.0/9.2/9.2ma)
(!!) (Recommended Pair) 6J6A RCA NOS 1960's (7.2/7.4ma and 7.4/8.2ma)
(!!) (Recommended Single) 6U8A GE NOS 1977 (14.2ma/10ma)
(!) (Best RCA Pair) 6SG7 RCA metal can NOS 1961 (11.6/12.4ma)
(!) (Recommended Pair) 5651 Sylvania branded RCA NOS 1982 (1 pair)
(!) (Recommended Pair) 5651 Sylvania NOS 1970 era (1 pair)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (10/10.6ma)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (11.0/11.4ma)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (11.2/11.6ma)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (9.6/10ma)
(!) 5C22 ITT Electron Tube Division used/good condition 1967 some scratches on the base
