(!!!!) (BEST SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)
(!!!!) (Best Single) 420A Western Electric NOS 1977 (2.2/2.3ma) 1-2% section balance
(!!!!) (Best Single) 5692 CBS Hytron Brown base NOS 1957 (9.4/9.0ma) (same Gm)
(!!!!) (Best Single) 5692 RCA RED BASE black plates like new 1950 (10.0/9.2ma)
(!!!!) (Best Single) 5751 Siemens Halske Germany triple mica NOS 1966 (2.6/3.0ma)
(!!!!) (Best Single) 5842=417A Amperex "PQ" Holland "D" getter Gold Pins NOS 1956-1959 (35ma)
(!!!!) (Best Single) 6C10 GE rebranded Westinghouse NOS 1970 era (Ampeg / Fender) (1.5ma/1.4ma/1.6ma)
(!!!!) (Best Single) 6C10 RCA branded Westinghouse NOS 1971 (Ampeg / Fender) (1.4ma/2.0ma/1.5ma) (Strongest Single)
(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (8.8/7.8ma)
(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (9.3/11ma)
(!!!!) (Best Single) 6SN7GTB RCA NOS 1958 side getter (9.6/9.8ma)
(!!!!) (Best Single) 6SN7GTB RCA NOS 1960 (10/11ma) (Highest Gm)
(!!!!) (Best Single) CV4004=12AX7 Mullard box plates NOS 1981 (Gm=1500/1600) (1.1/1.4ma)
(!!!!) (Best Single) ECC33 Mullard gray plates "D" getter halo NOS 1961 (9/9ma) 1-2% section balance
(!!!!) (BEST SINGLE) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (12.4ma/14.0ma)
(!!!!) (Best Single) ECC82=12AU7 Telefunken Diamond Bottom ribbed plates like new 1960 (10.6/10.2ma) (same Gm)
(!!!!) (Best Single) ECF80=6BL8 Telefunken Germany NOS 1971 (12.8/12.4ma)
(!!!!) (Best Single) EF89=6DA6 Telefunken Germany <> bottom NOS 1966 (7.6ma)
(!!!!) (Best Single) EF89=6DA6 Telefunken Germany <> bottom NOS 1966 (8.0ma)
(!!!!) (Best Single) JAN-CHS-6SN7W Sylvania "SHORT BOTTLE" NOS 1945 in Admiral box (8.2/8.0ma) (1-3% section balance)
