(!!!!!) (Best GT-shape Pair) 80 RCA GT-shape NOS 1959 (54-57/40 and 54-59/40)
(!!!!!) (Best Overall Quad) 10Y=VT-25 SYLVANIA NOS 1940's (28, 28, 28, 28.8ma) 1-3% matched
(!!!!!) (Best Overall Single) JAN-5691 Sylvania black plates NOS 1977 (2.8/3.1mA) (Same Gm) (Best 6SL7GT sub) (same internals as 5691 red base)
(!!!!!) (Best Pair) 10Y=VT-25 SYLVANIA NOS 1940's (25.0ma and 25.6ma) 1-3% matched (same Gm)
(!!!!!) (Best Pair) 10Y=VT-25 SYLVANIA NOS 1940's (25.2ma and 26.2ma)
(!!!!!) (Best Pair) 10Y=VT-25 SYLVANIA NOS 1940's branded National 1962 (25.8ma and 26.4ma) 1-3% matched (same Gm)
(!!!!!) (Best Pair) 5U4GB CBS NOS 1950's double "D" getters (59-59/40 and 58-60/40)
(!!!!!) (Best Pair) 6V6GT Mullard UK NOS 1960 era (40.0ma and 40.6ma) (same Gm)
(!!!!!) (Best Pair) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes 1-2% matched (38.8ma and 39.6ma) (Same Gm)
(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (117.4ma and 118ma)
(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (119.5ma and 120ma)
(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (127.4ma and 128ma)
(!!!!!) (Best Pair) JAN-12AT7WC Sylvania black plates NOS 1976 (11.2/12.2ma and 11.2/11.0ma)
(!!!!!) (Best Pair) JAN-5691 Sylvania black plates NOS 1977 (2.1/2.2mA and 2.1/2.3mA) (Best 6SL7GT sub) (same internals as 5691 red base)
(!!!!!) (Best Pair) JAN-5691 Sylvania black plates NOS 1979 (2.0/2.1mA and 2.1/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base)
(!!!!!) (BEST SYLVANIA PAIR) 6550 Sylvania welded plates branded RCA 1978 low hours/like new (124ma and 130ma)
(!!!!!) (Best Sylvania Pair) 6DJ8 Sylvania NOS 1960's (15.2/21ma and 15/18.5ma) (good detail and smooth)
(!!!!!) (Best Sylvania Pair) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes (41ma and 44ma) (Same Gm)
(!!!!!) (Best Sylvania pair) JAN-CHS-6SN7WGT Sylvania chrome top NOS 1952 (7.6/7.8ma and 7.2/8.6ma) (low noise, detailed, good extension) (High Gm)
(!!!!!) (Best Tungsol Pair) 5881 Tungsol 1960-1967 like new and used - same build (66.2ma and 66.5ma)
