(!!!!!) (BEST OVERALL QUAD) JAN-6550A GE NOS 1985-1986 (147ma, 148ma, 148.6ma, 149.5ma)
(!!!!!) (Best Pair) 6550A GE NOS "stapled plates" 1985-1986 (131.2ma and 131.5ma) 1% matched
(!!!!!) (Best Pair) 6550A GE NOS "stapled plates" 1985-1986 (137ma and 139.3ma)
(!!!!!) (Best Pair) 6550A GE NOS "stapled plates" 1985-1986 (138.8ma and 139.2ma) 1-2% matched
(!!!!!) (Best Pair) 6550A GE NOS "stapled plates" 1985-1986 (141ma and 143ma)
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (129ma, 129ma, 129.5ma, 130ma) 1-3% matched
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (130.2ma, 131ma, 131.2ma, 132.6ma) 1-3% matched
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (132.5ma, 132.2ma, 133.2ma, 134.4ma) 1-2% matched
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (132ma, 133.5ma, 134ma, 134.5ma) 1-3% matched
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (138.8ma, 139.2ma, 139.4ma, 139.5ma)
(!!!!!) (BEST QUAD) JAN-6550A GE NOS 1985-1986 (140.0ma, 140.6ma, 141.0ma, 141ma)
(!!!!!) (Best Value Pair) 6FQ7 RCA clear top NOS 1966-1968 (6/7ma and 6.8/7.2ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!!!) (Recommended Pair) 6FQ7 RCA clear top NOS 1969-1970 (7.6/11ma and 8.6/10ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!!) (2nd Best Pair - warm and smooth) 12AU7A GE NOS 1974-1981 (8.2/8.8ma and 8.3/8.8ma) (Rogue)
(!!!!) (Best GE Pair) 6FQ7 GE NOS 1976-1983 (7.2/8.2ma and 7.6/8.6ma)
(!!!!) (BEST PAIR) 6C4WA GE JAN NOS 1974-1975 (10.4/10.8ma) (same Gm)
(!!!!) (Best Pair) 6FQ7 Zenith by GE NOS 1977 (7.2/8.0ma and 7.0/7.8ma)
(!!!!) (Best Value Pair - warm and smooth) 6680=12AU7A GE NOS 1970's 1-2% matched (8/8ma and 7.7/7.9ma)
(!!!!) (Good Value Pair) 6FQ7 RCA clear top NOS 1970's (6.0/6.4ma and 6.4/7.4ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!!) (Pair) 12AU7A GE NOS 1970's (7.0/7.6ma and 6.8/7.6ma) (Rogue)