(!!!) (Best Value) 12AT7 Amperex Mullard UK NOS 1971 (7.5/11.2ma)
(!!!!) (Best Pair) JAN-12AT7WC Philips by Sylvania black plates NOS 1982 (9.8/10.6ma and 10.8/10.5ma)
(!!!!) (Best Value Pair) JAN-12AT7WC Sylvania black plates NOS 1980 (8.6/7.6ma and 9.0/7.5ma)
(!!!!) (Best Siemens Pair #1) E81CC=6201=12AT7WA Siemens Munich Germany NOS 1977 (12/13ma and 12/14ma) (High Ma and Gm)
(!!!) (Best 12AT7WC Single) JAN-12AT7WC Sylvania black plates NOS 1978 (9/10ma)
(!!!) (Best Overall Single) E81CC=12AT7 Siemens double mica NOS 1976 (11.4/12ma) (high Ma and Gm)
(!!!) (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)
(!!!) (Good Value) E81CC=12AT7 Haltron England NOS around 1960 (8.4/10.2ma)
(!!!) (Recommended Siemens Single) ECC81=12AT7 Siemens branded Mullard NOS circa 1970 (10.0/10.8ma)
(!!!) (Recommended Single) 12AT7 Fisher Telefunken Germany <> bottom NOS 1964 (7ma/11ma) (recommended for mic)
(!!!) (Recommended Single) 12AT7=ECC81 Mullard branded Raytheon NOS 1972 (13.2/11.0ma)
(!!!) (Recommended Single) 12AT7=ECC81 Siemens Halske Germany large "U" getter NOS 1957 (7.3ma/8.6ma)
(!!!) (Recommended Single) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (8.2ma/8.2ma) 1-2% section balance
(!!!) (Recommended Single) 12AT7=ECC81 Siemens Halske Germany NOS branded VALVO 1966 (9.0ma/10.6ma)
(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)
(!!!!) (Best Overall Single) ECC81=12AT7 Philips Miniwatt France by La Radiotechnique NOS 1962 (8.8/8.8ma) 1-2% section balance
(!!) (#1 12AT7 France) 12AT7 Philips Miniwatt France NOS 1964 in white box (7.4/7.8ma)
(!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1960's (9.4/10.5ma and 9.5/8.7ma)
(!!!) (Best used single) 12AT7 Telefunken Diamond Bottom used/good 1960's (10.0ma/10.8ma)
(!!) (Best GE Single) 12AT7=6679 GE NOS 1978 (10ma/10.1ma) 1-2% section balance
