(!!) (Slightly Microphoinic Single) 6072A RCA black plates NOS 1971 (2.6/3.0ma)
(!!!!!) (Recommended Single) JG-6072 GE triple mica black plates "O" getter NOS 1962 (3.1/3.2ma) (AKG, Tele 251, Peluso, Rode) (similar sound to 5-Star GE) (same Gm)
(!!!!!) (Best Value Single) 6072 GE branded RCA triple mica black plates "O" getter halo 1960 used/good (2.0/2.0ma) (preamp, V1 position in amp)
(!!!!) (Best Value Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good (2.0/2.1ma)
(!!!!) (Recommended Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new (2.4/2.8ma and 2.5/2.6ma) 1-3% matched (same Gm)
(!!!!) (Best Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new (2.1/2.0ma and 2.1/2.1ma) 1-2% matched (Same Gm)
* (read review) 6072 GE 5 star triple mica black plates "O" getter halo 1962
(!!!!) (Best Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new faded printing (2.8/2.9ma and 2.8/2.9ma) 1% matched
(!!!!) (2nd Best Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new faded printing (2.6/2.7ma and 2.7/2.8ma) 1-3% matched (Same Gm)
(!!!) (Single) 6072 RCA NOS gray plates 1967 (2.0/1.9ma) (Fender, Apex)
(!!!!!) (Best Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 tests like new (2.7/2.7ma) (1-2% section balance)
(!!!!!) (Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (2.8/3.6ma) (mic grade)
(!!!!!) (Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new - faded printing (2.7/2.5ma) (mic grade)
