(!!!!) (Best Overall GE Single) 12AY7 GE NOS "O" getter NOS 1964 (2.9/2.8ma)
(!!!!) (Best Single 1971) 12AY7 RCA NOS 1971 (2.4/2.8ma) (Fender, Clark, Decware)
(!!!!) (Recommended Single) 12AY7 GE NOS "D" getter 1957 (2.4/2.2ma)
(!!!!) (Best Single 1953) 12AY7 GE rebranded Raytheon "GRAY BOX PLATES" NOS "D" getter 1953 (3.2/3.5ma)
(!!!) (Best GE 1954) 12AY7 GE branded RCA gray plates "D" getter NOS 1954 (2.3/2.9ma)
(!!!) (Recommended Single) 12AY7 GE NOS rebranded Raytheon 1960's (2.4/2.8ma)
(!!!) (Recommended Single) 12AY7 Tungsol tall gray ribbed plates rebranded Raytheon NOS "D" getter 1950's (3.3/4.0ma)
(!!!) 6072 RCA gray plates used/good 1960's (Fender, Apex) (1.9ma/2.1ma)
(!!!) 6072 RCA NOS gray plates rebranded Raytheon 1960's (Fender, Apex) (2.1ma/2.3ma)
(!!!) 6072 RCA NOS gray plates rebranded Raytheon 1960's (Fender, Apex) (2.5ma/2.8ma)
(!!) (Recommended Single) 12AY7 GE NOS "O" getter NOS 1964 (2.2/2.7ma)
(!!) 12AY7 GE branded Marconi "D" getter used/good 1950's (2.3/2.4ma)
(!!!!) (Best Tungsol Single) 12AY7 Tungsol long plates NOS 1963 era (3.0/3.1ma)
(!!) (BEST VALUE) 12AY7 GE branded Raytheon NOS "O" getter 1960's (2.6/2.3ma)
