(!!!!) (Best Pair) 6SC7GTY Tungsol NOS round black plates 1950 era (2.0/2.1ma and 2.0/2.0ma) 1-2% matched
(!!!!) (Best Pair) 6SC7GTY Tungsol NOS round black plates 1950 era (2.2/2.2ma and 2.2/2.3ma) 1-2% matched
(!!!!) (Recommended Pair) 6SC7 RCA metal can NOS 1960's
(!!!) (Best Overall Pair) 6SC7 GE metal can NOS 1970's (1.9/2.0ma and 1.9/2.0ma) 1-2% matched
(!!!) (Best Overall Pair) 6SC7 GE metal can NOS 1977 (1.8/2.0ma and 1.7/2.0ma) 1-2% matched
(!!!) (Best Pair) 6SC7GTY Tungsol NOS round black plates 1950 era (2.0/2.1ma and 2.0/2.1ma) 1% matched
(!!!) (Recommended Pair) 6SC7 GE metal can NOS 1960's (1.7/1.8ma and 1.7/1.7ma) 1-2% matched
(!!!) (~ Best Sounding Single ~) 6SC7GTY Tungsol NOS black round plates NOS 1950 era (2.0ma and 2.0ma) 1% section balance
(!!!) (~ Recommended Pair ~) 6SC7GTY Tungsol NOS round black plates 1950 era (1.9/2.1ma and 1.9/2.1ma) 1% matched
6SC7 Cunningham used/very good 1940's (1.7/2.1ma)
6SC7 Ken Rad NOS 1945 (1.9/2.0ma)
6SC7 Raytheon NOS 1955 (1.8/2.0ma)
6SC7 RCA NOS 1970 (2.0/2.0ma) 1% section balance
6SC7 RCA NOS small amount of surface rust or chipped black paint (2.3/2.5ma)
6SC7=VT-105 Ken Rad used/good 1946 (1.8/1.9ma)
6SC7=VT-105 Ken Rad used/very good 1940's (2.1/2.4ma)
6SC7=VT-105 RCA used/good 1940's (1.4/1.5ma)
6SC7=VT-105 RCA used/good 1940's (1.6/1.7ma)
6SC7GT Tungsol black base, black round plates used/tests like new 1940's in white box (1.7/1.7ma)
