(!!!!!) (Best Single 1951) 6V6GT RCA black plate burgundy base like new 1951 (43.5ma) (Fender, Swart, Clark, Victoria, Ampeg, Silvertone amps)
(!!!!!) (Best Sylvania Pair) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes (41ma and 44ma) (Same Gm)
(!!!!!) (Single) 6V6GT Ken Rad coated glass NOS 1940's (40.5ma)
(!!!!) (Recommended Pair) 6V6GT National Union coated glass NOS 1950 (48ma and 52ma)
(!!!!) (Recommended Pair) 6V6GT RCA black plate coated glass like new 1940's and NOS 1954 (49ma and 46ma)
(!!!!) (Recommended Pair) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes (35ma and 37ma)
(!!!!) (Recommended Pair) CV1067=6J5G GEC (M-O Valve) UK coated glass NOS 1950's (7.2ma and 7.2ma) 1-2% matched
(!!!) (BEST PAIR) 6A3 Tungsol coated glass NOS 1940's (64ma and 65ma)
(!!!) (BEST SINGLE) JAN-CRP-6F8G=VT-99 Raytheon parallel black plates 1944 (8ma and 8ma)
(!!!) (Best Sylvania Pair) 6B4G Sylvania NOS 1940's same build (92ma and 95ma)
(!!!) (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) KT66 Osram UK black base used 1950's (57ma) (Gm=60%)
(!!!) (Single) KT66 Osram UK brown base used 1950's (62ma) (Gm=65%)
(!!!) 6SN7GTB Tungsol brown base "U" getter used/good 1950's (7.0/8.2ma)
(!!) (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)
