(!!) (GOOD VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (8.2/11.4ma)
(!!) (Good Value) 12AT7=ECC81 Siemens Halske Germany NOS 1970 (10.3/11.0ma)
(!!) (Recommended from 1950's) 12AT7WA Sylvania gray plates triple mica "D" getter halo tests like new 1950's (9.4/12.0ma)
(!!) (Recommended from 1958) JHS-12AT7WA Sylvania triple mica "D" getter NOS 1958 (11.6/15ma) (phase inverter, reverb)
(!!) (Recommended from 1964) 12AT7WA Sylvania NOS 1964 (7.0/8.4ma)
(!!) (recommended single 1957) CV455=12AT7 Mullard "D" getter like new 1957 (12.4/8.6ma)
(!!) (Recommended Single 1961) JLRV-12AT7WA=6201 GE Canada gray plates triple mica "U" getter NOS 1961 (9/12ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (7.6/7.0ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (8.0/9.2ma)
(!!) (Recommended Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1965-1967 (10.4/9.0ma)
(!!) (Single) 6060=12AT7 Brimar Thorn UK square black plates triple mica large "O" getter halo 1957 used/good (7.2/7.6ma) (Premium low noise 12AT7)
(!!) (Single) 6060=12AT7 Brimar Thorn UK square black plates triple mica large "O" getter halo 1960 NOS (6.4/8.4ma) (Premium low noise 12AT7)
(!!) (Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (6.0/7.4ma)
(!!) (SINGLE) ECC81=12AT7=CV455 Mullard BVA UK copper grid posts NOS 1962 (10/10.6ma)
(!!) (SINGLE) M8162=12AT7WA Mullard UK copper grid posts NOS 1963 (9.2/13.5ma)
(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
(!!) (slightly microphonic) JHS-12AT7 Sylvania black plate "D" getter 1953 (11.2ma/11.2ma) 1% section balance
(!!) (~ Best Value ~) 12AT7 Toshiba JAPAN black plates rebranded CM Curtis Mathes NOS 1960's copper grid posts (9.0/9.2ma)
(!!) (~ Best Value ~) 12AT7 Toshiba JAPAN rebranded "LINDAL TUBE JAPAN" NOS 1960's copper grid posts (13.8/15.4ma)
(!!) (~ Recommended Single ~) 12AT7 Mullard NOS 1971 rebranded "33A/101K" (12.6ma/15.6ma) (Highest Ma and Gm)