(!!!!!) (Best Overall Pair) 6FQ7 RCA clear top NOS 1970 era (7.6/8.2ma and 7.5/8.8ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!!!) (Recommended Pair) 6FQ7 RCA clear top NOS 1970 era (8.0/8.8ma and 7.8/9.2ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!!) (~ 2nd Best GE Pair ~) 6FQ7 Zenith by GE NOS 1977 closely matched
(!!!) (Best Overall Pair) 6FQ7 Sylvania NOS 1960's same build (7.2/7.6ma and 7.0/7.2ma)
(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's (7.4/8.9ma and 7.6/9.0ma)
(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's 1-2% matched (7.0/7.6ma and 7.4/7.4ma)
(!!!) (~ Good Value Pair ~) 6FQ7 Sylvania NOS 1970's same build
(!!!) (~ Recommended Pair ~) 6FQ7 Sylvania NOS 1970's
(!!) (#1 6FQ7 RCA clear top) 6FQ7 RCA clear top NOS 1960's (7.1/7.6ma)
(!!) (#2 6FQ7 GE Pair) 6FQ7 GE branded RCA NOS 1970's
(!!) (Best Overall Pair) 6FQ7 Sylvania NOS 1960's same build (7.6/7.8ma and 7.0/7.6ma)
(!) (#1 6CG7 Single) 6CG7 GE NOS "U" getter 1959 (8.6ma/9.4ma) and (strong Gm)
(!) 6CG7 Sylvania branded Philco Black Plates NOS chrome shield "o" getter halo 1959 (10.2ma/8.8ma)
6CG7 GE NOS "O" getter gray shield between plates 1960 (7.0/7.2ma)
6CG7 GE NOS gray plates / chrome shield between plates "O" getter halo 1962 (6.5ma/7.5ma)
6CG7 Packard Bell by RCA used/good gray electrostatic center shield between plates 1960 (7.2ma/7.4ma)
6CG7 PHILCO COOL CHASSIS TV by Sylvania SHINY BLACK PLATES, chrome shield 1961 (10.2ma/13.8ma)
6CG7 Sylvania branded CBS NOS 1961 with chrome electrostatic shield between plates (5.2/7.6ma)
6CG7 Sylvania branded Philco NOS chrome center shield 1960 (7.5ma/8.0ma)
6CG7 Sylvania gray plates NOS "U" getter 1958 with chrome electrostatic shield between plates (6.8ma/8.8ma)
