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(!!!) (Best Single) 12AT7=ECC81 Siemens Halske Germany branded Telefunken NOS 1961 (12.2ma/10ma)
(!!) (Good Value) 12AT7=ECC81 Siemens Halske Germany used/strong 1964 (8.2ma/12.2ma)
(!!) (Best Value Single) 12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1975 era like new (8/12.6ma)
(!!!) (Best Single) JAN-12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1968 (13.8/13.4ma)
(!!!!) (BEST SINGLE #3) JG-12AT7WA=6201 GE NOS "blue tip - red dot" triple mica, "O" getter halo, gray plates 1960 (8.6/11.8ma)
(!!!!) (Single) 12AT7 RCA NOS 1965 (7.2/12.8ma) (good tone)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (11.5/10.8ma) 1-5% section balance
(!!!!) (Best Sound/Best Price) 12AT7 GE gray plates NOS 1961 (11.5/13ma and 13.5/11.5ma) (sweet sound)
(!!!) (Best Pair #3) ECC81=12AT7 Mullard UK branded Philips NOS 1970-1973 (9.6/8.4ma and 9.0/9.4ma) (Jolida, Fender)
(!!!) (Best Value Pair) 12AT7 RFT East Germany branded Haltron NOS 1970's (9.8/8.6ma and 9.3/9.2ma) 1-5% matched
(!!!) (Single) 12AT7 GE gray plate NOS 1978 (9.5ma/12.5ma)
(!!) 12AT7=ECC81 Mullard UK "D" getter used/good 1960 (6.8/7.5ma)
(Best Single) 12DT8 Sylvania black plates NOS 1970's (12.4/13.6ma)
(!!!!) (Single) 12AT7=ECC81 Mullard UK used/tests like new 1968 (10.2/12.2ma)
(!!) (SINGLE) 12AT7 RCA used/good 1960's (5/6ma)
(!!!) (Recommended Pair) 12AT7 GE gray plate NOS 1961 (12.0/13.4ma and 13.2/12.5ma)
(SINGLE) JAN-12AT7WC Philips by Sylvania black plates NOS 1981 (11.2/7.6ma)
(SINGLE) JAN-12AT7WC Philips by Sylvania black plates NOS 1981 (7.5/7.8ma)
(SINGLE) JAN-12AT7WC Philips by Sylvania black plates NOS 1982 (6.0/8.8ma)
(!!!!) (Best Sylvania Pair) JHS-12AT7WA Sylvania triple mica "D" getter NOS 1959-1960 (10.8/12.8ma and 11.6/10.8ma) (phase inverter, reverb)
