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(!!!) (Best Mullard Single) 12AT7WA=CV4024=M8162 Mullard UK NOS 1964 (14/10ma)
(!!) (Best Pair #3) ECC81=12AT7 Philips by Mullard and Mullard UK NOS 1965-1970 (10.5/12ma and 11.2/10.6ma) (sweet sound)
(!!) (Good Value Single) 6201=12AT7 Valvo Germany rebranded Philips SQ 1970 (6.8/7.8mA)
(!!) 12AT7 Knight by Mullard NOS 1966 (8.8/9.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1968 partially faded printing (7.8/10.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1975 (9.6/14.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1976 (7.6/8.2ma)
(!!) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1962 (8.6/13.6ma)
(!!) (SINGLE) M8162=CV4024=12AT7WA Mullard UK NOS 1966 (10.4/9ma)
(microphonic single) 12AT7 Philips Miniwatt made in Hamburg, Germany by VALVO NOS "D" getter halo 1959 (8.8/10.2ma)
(!!!) (Best Pair #2) ECC81=12AT7 Mullard UK branded Philips NOS 1970-1976 (10.5/10.0ma and 10.4/9.2ma) (very close Gm) (Jolida, Fender)
(!!!!) (Recommended Pair) ECC81=12AT7 Philips by Mullard NOS 1966-1970 (10/9.2ma and 9.3/8.6ma) (Close Gm matching) 1-5% matched
(!!) (Recommended Single) 12AT7=ECC81 Mullard shield logo NOS 1970 (8.0/8.4ma)
(!!!!) (Best Pair #3) ECC81=12AT7 Mullard UK NOS 1968-1970 (9.4/11.2ma and 9.8/11.2ma) 1-3% matched (sweet sound)
(!!!!) (Best Pair #1) ECC81=12AT7 Mullard UK copper grid posts NOS 1962-1963 (10.8/11.4ma and 11.8/12.4ma) 1-5% matched (sweet sound)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (9.6/10ma) 1-3% section balance
(!!) (Best Brimar Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1967 (10.2/11.4ma)
(!!) (Recommended Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1965-1967 (10.4/9.0ma)
(!!!!) (Best Single #2) 12AT7=ECC81 Mullard branded Raytheon NOS 1972 (9.2/9.2ma)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (11.5/10.8ma) 1-5% section balance
