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(!!!!!) (Best Overall Single #2) JG-6072 GE double mica black plates "O" getter NOS 1963 (3.3/3.1ma) (AKG, Tele 251, Peluso, Rode) (similar sound to 5-Star GE)
(!!!!!) (Best Overall Single) JG-6072 GE triple mica black plates "O" getter NOS 1961 (3.1/3.6ma) (AKG, Tele 251, Peluso, Rode) (similar sound to 5-Star GE)
(!!!!!) (Best Value Single) 6072 GE 5 star triple mica black plates "O" getter halo 1960's - 2 hairline cracks top of glass - tests like new (2.4/2.7ma) (mic grade)
(!!!!!) (Recommended Single) JG-6072 GE triple mica black plates "O" getter NOS 1962 (2.9/2.3ma) (AKG, Tele 251, Peluso, Rode) (similar sound to 5-Star GE)
(!!!!) (Best Value Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good (2.0/2.1ma)
(!!!!) (Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 low hours/like new (2.2/2.0ma)
(!!!) (BEST SINGLE #1) JAN-CRC-5693 RCA NOS 1961 original box (2.9ma Gm=1600) (premium low noise 6SJ7) (Peluso, Gibson, Fender)
(!!) (Best Single #3) JAN-CRC-5693 RCA red can NOS 1961 (2.6ma) (Peluso, Gibson)
(!!) (Best Single) JAN-5693 GE JAN Black Can NOS 1978 (3.0ma)
(!!) (Good Value Pair) 5693 RCA branded Raytheon and RCA used good 1953-1960 (2.6ma and 2.7ma)
(!) (slightly microphonic) 6072 GE branded RCA triple mica black plates "O" getter halo 1960 used/good (2.0/2.0ma)
* (read review) 6072 GE 5 star triple mica black plates "O" getter halo 1962
5693 GE used/like new 1959 (2.9ma)
5693 RCA branded Tungsol used good 1950's (2.6ma)
5693 RCA used good 1953 (2.9ma)
5693 RCA used good 1958 (2.4ma)
5840=EF732 GE NOS 1953 (5.3ma) (Soundelux, Peluso, Brauner)
5840=EF732 Raytheon NOS 1960's (4.7ma)
5840W=EF732 Sylvania NOS 1970's (5.2ma)
