(!!!) (Recommended Pair) 6DJ8 GE NOS coated glass 1975-1978 (19.8/19.2ma and 17/19.8ma) (smooth and warm)
(!!!) (Recommended Single) JHS-6005 Sylvania NOS coated glass 1966 (46.5ma)
(!!!) (Recommended Single) JHS-6AN8A Sylvania NOS 1966 (13.6/16.5ma)
(!!!) (SINGLE) 6F8G National Union parallel dark gray plates 1950 era (11.2ma and 12.8ma)
(!!!) (SINGLE) 6F8G Sylvania parallel black plates like new 1940's (10.8ma and 9.2ma)
(!!!) (Single) KT66 Osram UK black base used 1950's (57ma) (Gm=60%)
(!!!) (Single) KT66 Osram UK brown base used 1950's (62ma) (Gm=65%)
(!!) (2nd Best Pair) 6K6GT RCA NOS coated glass 1949 (38ma and 40ma)
(!!) (Recommended Pair) JAN-6V6GT Sylvania NOS 1976-1979 (41ma and 38ma)
(!!) (Single) 6F8G National Union parallel plates like new 1950 (9.4ma and 8.0ma)
(!!) (slightly microphonic) 12AU7A Raytheon black ribbed plates "D" getter halo black coated glass 1951 (8.8/9.6ma)
(!!) 6AN8A Sylvania coated glass NOS 1960's (20.2/11.2ma)
(!!) 6K6GT Channel Master Japan 1960's (50ma)
(!!) 6K6GT Sylvania NOS 1970 era (42.5ma)
(!!) 6L6GAY Sylvania brown base NOS 1956 aged 48-hours (73ma)
(!!) 6L6GAY Sylvania brown base NOS 1956 aged 48-hours (84.2ma)
(!!) 6V6GT Philco by Sylvania tests like new 1957 (42.2ma)
(!) VT-100-A=807 Hytron black plate used/good 1940's (54ma)
1635 RCA coated glass NOS 1950-1953 (2 in stock)
6A3 Ken Rad coated glass NOS 1950 (82ma)
