(!!!!!) (Best Sound for the Money Pair) JAN-12AT7WC Sylvania black plates NOS 1980 (7/8ma and 7.3/8.2ma)
(!!!!) (Best Overall Pair) JAN-12AT7WC Sylvania black plates NOS 1979-1980 (9.8/10ma and 10.8/9.8ma)
(!!!!) (Best Overall Pair) JAN-12AT7WC Sylvania black plates NOS 1980 same date codes (9.0/9.2ma and 9.3/9.9ma) (close Gm)
(!!!!) (Best Pair #2) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (10.5/10.4ma and 11.2/10.5ma) 1-3% matched
(!!!!) (Best Pair #2) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (9.5/9.2ma and 10/9.6ma) 1-3% matched (close Gm)
(!!!!) (Best Pair #3) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (10.3/11.0ma and 10.8/10.2ma) 1-5% matched
(!!!!) (Best Pair) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (10.8/12.0ma and 10.8/12.2ma) (very close Gm) 1-2% matched
(!!!!) (Best Pair) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (11.4/11.0ma and 10.8/11.4ma) (very close Gm) 1-2% matched
(!!!!) (Best Pair) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (9.0/9.8ma and 9.0/9.6ma) 1-2% matched
(!!!!) (Best Pair) JAN-12AT7WC Philips by Sylvania black plates NOS 1982 (9.8/10.6ma and 10.8/10.5ma)
(!!!!) (Best Pair) JAN-12AT7WC Sylvania black plates NOS 1975-1980 (10/8.6ma and 10.2/9.2ma)
(!!!!) (Best Single #2) 12AT7=ECC81 Mullard branded Raytheon NOS 1972 (9.2/9.2ma)
(!!!!) (Best Single) 12AT7=ECC81 Mullard UK NOS 1972 (10.4/10.2ma)
(!!!!) (BEST SINGLE) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (12.4ma/14.0ma)
(!!!!) (Best Value Pair) JAN-12AT7WC Sylvania black plates NOS 1980 (8.6/7.6ma and 9.0/7.5ma)
(!!!!) (Good Value Pair) JAN-12AT7WC Philips by Sylvania black plates NOS 1981-1982 (6.8/6.8ma and 7.0/7.2ma)
(!!!!) (Recommended Pair) JAN-12AT7WC Philips by Sylvania black plates NOS 1981-1982 (8.3/8.4ma and 8.4/7.8ma)
(!!!) (Best Overall Single) E81CC=12AT7 Siemens double mica NOS 1976 (11.4/12ma) (high Ma and Gm)
(!!!) (BEST SINGLE #1) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 faded printing (10.5ma/10.5ma) 1-2% section balance
(!!!) (Best SIngle 1950's) 12AT7 Brimar UK black plates "O" getter halo NOS late 1950's (11.6/12.8ma)
