(!!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1955 and 1968 (91ma and 96ma) (these are some of the best sounding 6B4G ever made)
(!!!!!) (Recommended Pair) 6L6GC RCA Black Plate used/good 1962-1964 (59.5ma and 60.8ma)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (41.5ma and 41.8ma)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (41.5ma and 42.8ma)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (44ma and 45ma)
(!!!!!) (Recommended Pair) EL34 Philips Mullard XF2 single halo "O" NOS and like new 1969-1973 (90.8ma and 95ma) (can make a quad with another XF2 pair)
(!!!!!) (Recommended Pair) EL84 Telefunken Germany <> bottom test like new 1960's (53ma and 57.4ma)
(!!!!!) (Recommended Single) 421A=5998 Western Electric NOS 1984 (81ma and 94ma)
(!!!!!) (Recommended Single) KT88 GEC UK used/tests like new 1960's (137.6ma, Gm=10,800)
(!!!!!) (Single) 45 Tungsol tests like new 1940's (40ma)
(!!!!) (2nd Best Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (88ma and 101ma)
(!!!!) (Best 6094 Quad) JAN-CEA-6094 Bendix gold pins NOS 1957 (55/57/57/58ma)
(!!!!) (BEST MULLARD PAIR) EL84 Philips Mullard UK NOS 1976-1977 (56.2ma and 59ma) (Same Gm)
(!!!!) (Best Overall Pair) 6550 Tungsol gray plates NOS 1975 (139ma and 140.5ma)
(!!!!) (Best Overall Pair) 6L6G=VT-115A RCA black plate coated glass NOS mid-1940's (81ma and 82.8ma) (rare) (same Gm)
(!!!!) (Best Overall Pair) JAN-6528A Raytheon NOS 1978 (132/138ma and 143/144ma)
(!!!!) (Best Overall Single) 50 RCA Cunningham engraved base NOS ST-19 around 1940 (61.5ma) (strong Ma and Gm)
(!!!!) (Best Overall Single) 6V6GT Sylvania NOS 1940's (46.5ma)
(!!!!) (Best Overall Single) JAN-5998=421A Tungsol black plates top and side getter NOS 1966 (124ma and 119ma) (Close Gm)
(!!!!) (Best Pair #2) 6146B RCA NOS 1970-1974 (92.5ma and 92ma) 1-3% matched
