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(!!!!) (Best Single #2) 7581A GE NOS 1979 (87ma)
(!!!!) (Best Single #3) 6146B GE NOS 1979 (98ma)
(!!!!) (Best Single #3) 7581A GE NOS 1979 (76ma)
(!!!!) (Best Single) 6146B GE NOS 1980 (121ma)
(!!!!) (Best Single) 6550 Tungsol branded RCA NOS vented plate NOS 1965 (130ma) (Recommended for Audio Research Ref power supply)
(!!!!) (Best Single) 6AS7G RCA gray plates NOS 1961 (85ma/123ma)
(!!!!) (Best Single) 6L6GC RCA black plate NOS 1962 (88ma)
(!!!!) (Best Single) 8068 GE NOS 1983 slightly tilted glass (47.5ma)
(!!!!) (Best Single) CX-345 Cunningham Balloon used/tests like new 1930 era (41ma)
(!!!!) (Best Single) JAN-6V6G=VT-107A RCA coated glass tests like new mid-1940's (56ma)
(!!!!) (Best Single) JAN-CHS-6V6G=VT-107A Sylvania coated glass tests like new 1944 (42ma)
(!!!!) (Best Sylvania Pair) 6BQ5 Sylvania black plate NOS 1970's (56.0ma and 58.0ma)
(!!!!) (Best Tungsol Single) 6V6GT Tungsol coated glass NOS 1954 (44ma)
(!!!!) (Best Value Like New Pair) 6550C Svetlana Russian low hours/like new 2011 (132ma and 136ma) (strong Gm) **
(!!!!) (Best Value Pair #1) 6B4G Raytheon NOS 1940's separate plates in white boxes (89ma and 92ma)
(!!!!) (Best Value Pair #1) 71A RCA/Cunningham Radiotron used/tests like new 1930's (24.5ma and 26ma)
(!!!!) (Best Value Pair) 211=VT-4-C GE NOS 1942-1945 side getters faded (108ma and 110.4ma)
(!!!!) (Best Value Pair) 5881 GE Canada NOS 1965-1970 (73ma) (same internal build and sonics as 5881 Tungsol)
(!!!!) (Best Value Pair) 6146B GE NOS 1974 and 1985 (86ma and 90.5ma)
(!!!!) (Best Value Pair) 6550C Svetlana Russian used/test like new 1998 (140ma and 142ma)
