(!!!!) (Best GE Pair) 6N7 GE metal can NOS 1957 (3.0/2.7ma and 2.9/2.8ma) 1-3% matched
(!!!!) (Best Pair) 6N7 GE metal can NOS 1954-1955 (3.3/3.1ma and 3.1/3.1ma) 1-2% matched
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1953 (1.1ma and 1.2ma)
(!!!) (1 Pair) 6J7 RCA Radiotron used/good 1940's (1.7ma and 1.8ma)
(!!!) (1 PAIR) 6V6 GE metal can NOS 1976 (36.6ma and 36.8ma) 1-2% matched
(!!!) (1 set of 10) 6V6 GE metal can NOS (10 for $148.88)
(!!!) (Best Overall Pair) 6SC7 GE metal can NOS 1970's (1.9/1.9ma and 1.9/1.8ma) 1-2% matched
(!!!) (Best Pair) 5Z4 Raytheon NOS 1950 (54/40 and 54/40 x 2 tubes)
(!!!) (Best Pair) 6AG7 RCA NOS 1950-1951 (31.5ma and 32.0ma)
(!!!) (Best Pair) 6C5 RCA / RCA Victor metal can NOS 1950-1951 (8.2ma and 8.8ma)
(!!!) (Best Pair) 6SK7 GE NOS 1969 (9.6ma and 9.6ma) 1% matched
(!!!) (Good Value Pair) 6SC7 GE metal can NOS 1977 (1.6/1.9ma and 1.6/1.9ma) 1% matched
(!!!) (Pair) 6C5 Raytheon metal can NOS 1950 (7ma and 8ma)
(!!!) (Recommended Pair) 1619 RCA NOS 1960-1964 (52ma and 53ma)
(!!!) (Recommended Pair) 6SC7 GE metal can NOS 1969-1977 (1.7/1.9ma and 1.6/1.8ma) (same Gm)
(!!!) (Recommended Pair) 6SC7 GE metal can NOS 1977 (1.7/1.7ma and 1.7/1.8ma) 1-2% matched
(!!!) (Recommended Pair) 6SC7 GE NOS 1977 (1.7/2.1ma and 1.8/2.1ma) 1-3% matched
(!!!) (Recommended Pair) 6V6 Sylvania metal can NOS 1970 era (39.2ma and 39.3ma)
(!!!) (Recommended Pair) 6V6 Sylvania metal can NOS 1970 era (42.6ma and 42.8ma)
(!!!) (Recommended Pair) 6V6 Sylvania metal can NOS 1970 era (44.8ma and 45.2ma)
