(!!!!) (Best Single) CV181=ECC32 Mullard black base black plates NOS 1950's (6.6/6.3ma)
(!!!!) (Best Single) ECC33 Mullard gray plates "D" getter halo NOS 1961 (9/9ma) 1-2% section balance
(!!!!) (Best Single) ECC33=6SN7GT Mullard black plates platter getter halo NOS 1950-1955 (10.2/12.2ma)
(!!!!) (Best Single) JAN-CHS-6SN7W Sylvania "SHORT BOTTLE" NOS 1945 in Admiral box (8.2/8.0ma) (1-3% section balance)
(!!!!) (Best Value Pair) 6SN7GTA GE "U" getter halo - side getter - copper grid posts NOS 1953-1954 (6.6/6.0ma and 6.0/6.8ma)
(!!!!) (Best Value Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1953 (6.4/7.0ma and 7.0/6.4ma) 1-2% matched
(!!!!) (Best Value Pair) 6SN7GTB RCA NOS and used/good 1955 era same date codes (7.6/7.6ma and 7.1/7.6ma)
(!!!!) (Best Westinghouse Single) 6SN7GTB Westinghouse USA black plates NOS 1963 (8.2/8.0ma)
(!!!!) (Good Value Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1953 (6.0/7.2ma and 6.0/7.2ma) 1-2% matched
(!!!!) (Good Value Pair) 6SN7GTB GE NOS and like new 1960-1964 (7.0/7.8ma and 7.0/6.8ma)
(!!!!) (Good Value Pair) 6SN7GTB Sylvania chrome top like new 1950's (8.0/9.1ma and 8.0/9.2ma) (Schiit Freya, Rogue, Modwright OPPO)
(!!!!) (Good Value Pair) 8SN7GTB Sylvania GM Delco "chrome top" NOS 1957 same build (6.4/7.2ma and 7.4/6.2ma) (Schiit Freya, Rogue, Modwright OPPO, Cary) (1-5% matched)
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1952 (9.4/11.4ma)
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1954 (6.0/6.4ma)
(!!!!) (Good Value Single) 6SN7GTB Westinghouse USA black plates "D" getter halo like new 1960 (6.8/7ma)
(!!!!) (Recommended Pair) 6SN7GTA GE "U" getter halo - side getter - copper grid posts NOS 1951-1953 (7.0/7.8ma and 7.8/7.2ma) (close Gm)
(!!!!) (Recommended Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952-1953 (6.6/7.8ma and 6.6/8.2ma) (close Gm) 1-3% matched
(!!!!) (Recommended Pair) 6SN7GTB GE NOS 1964-1965 (7.4/8.0ma and 7.8/8.8ma) (smooth) (Schiit Freya, Rogue)
(!!!!) (Recommended Pair) 6SN7GTB RCA branded GE NOS 1966-1967 (10.4/10.6ma and 10.2/11.6ma) (smooth presentation)
(!!!!) (Recommended Pair) 6SN7GTB RCA NOS 1964-1970 (7.2/8.2ma and 7.0/7.4ma)
