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(!!!) (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)
(!!!) (Recommended Pair) 12AT7 GE gray plate NOS 1961 (12.0/13.4ma and 13.2/12.5ma)
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1971 (7.2/8.0ma and 7.6/6.6ma) (close Gm)
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1974 (10.5/7.5ma and 10.8/8.2ma)
(!!!) (Recommended Single) 12AT7 Fisher Telefunken Germany <> bottom NOS 1964 (7ma/11ma) (recommended for mic)
(!!!) (Recommended Single) 12AT7 Fisher Telefunken Germany <> bottom NOS 1964 (9ma/6.5ma) (recommended for mic)
(!!!) (Recommended Single) 12AT7 Telefunken Germany <> bottom NOS 1957 (9.8ma/7.2ma)
(!!!) (Recommended Single) 12AT7=ECC81 Siemens Halske Germany NOS 1960 (10.3ma/11ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1975 (8.4ma/6.8ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1978 (9.5ma/12.5ma)
(!!!) (SINGLE) 12AT7 RCA gray plates "D" getter NOS 1962 (7.0ma/6.5ma)
(!!) (Best Pair #2) ECC81=12AT7 Philips by Mullard and Mullard UK NOS 1965-1970 (10.5/12ma and 11.2/10.6ma) (sweet sound)
(!!) (Best used single) 12AT7 Telefunken Diamond Bottom used/good early 1960's (9.0ma/9.4ma)
(!!) (Best Value Used) ECC81=12AT7 Siemens Halske Germany "D" getter 1960 era used/good (8.8/7.5ma)
(!!) (Good Value Single) 6201=12AT7 Valvo Germany rebranded Philips SQ 1970 (6.8/7.8mA)
(!!) (Good Value) 12AT7 Telefunken Diamond Bottom used/good 1960's (8.2ma/10.4ma)
(!!) (Good Value) 12AT7 Telefunken Diamond Bottom used/good early 1960's (7.8ma/10.8ma)
(!!) (Good Value) 12AT7 Telefunken Germany <> bottom used/good 1960's no printing (7.6ma/7.6ma) 1-2% section balance
(!!) (Good Value) 12AT7=ECC81 Siemens Halske Germany used/strong 1964 (8.2ma/12.2ma)
(!!) (Recommended Single) 12AT7=ECC81 Mullard shield logo NOS 1970 (8.0/8.4ma)
