(!!!!!) (Recommended Single) 12AX7 BRIMAR BVA England NOS narrow ribbed plates NOS 1960 (1.4/1.5ma) (Highest mA and Gm)
(!!!!) (Best Pair) ECC801S=12AT7 Telefunken Germany <> bottom NOS 1967-1968 1-2% matched (9.6/9.4mA and 9.8/9.6mA)
(!!!!) (BEST OVERALL PAIR) 5670W GE NOS 1986 (8.2/8.2ma and 8.4/8.2ma) 1-2% matched
(!!!!) (Best Single) E80CC=6085 Philips Holland SQ gold pins NOS 1967 (6.4/7.0ma) (same Gm)
(!!!!) (Best Quad #2) 6J5GT Sylvania lightning logo NOS 1945-1946 (8.2/8.0/8.0/8.2ma)
(!!!!) (Oldest Single - rare version) ECC801S=12AT7 Telefunken Germany <> bottom NOS double halo "O-O" 1956 (10.2/10.2mA) 1-2% section balance)
(!!!!) (Best Holland Pair) EF86 ADZAM Holland NOS 1963-1964 (3.5ma and 3.5ma) 1-3% matched
(!!!!) (Best Pair) 6N7 GE metal can NOS 1954-1955 (3.3/3.1ma and 3.1/3.1ma) 1-2% matched
(!!!!) (2nd Best RCA Single) 6C10 RCA branded Westinghouse NOS 1971 (Ampeg / Fender) (1.0ma/2.1ma/1.6ma) (Strongest Single)
(!!!!) (Best Pair #2) 6688=E180F RCA by Mullard UK gold pins 1974 (8.8ma and 9.0ma) (strong Gm)
(!!!!) (Best 6922 Single) USN-CEP-6922 Amperex USA NOS 1964 pins #7-#8 gently cleaned of oxidation (18.5ma/20.2ma) (Best American Made 6922)
(!!!!) (Single) 6DJ8 Philips Holland low hours/like new 1967 (13.6/14.4ma) (sonically the same as Bugle Boy)
(!!!!) (Best Overall Pair) 6112 Philips JAN 1980's (1.2/1.2ma and 1.1/1.5ma) (Highest mA and Gm) (Audio Note, Musical Fidelity)
(!!!!) (Good Value Pair) 6FQ7 Philips by Sylvania NOS 1980 era (6.2/6.0ma and 6.0/6.2ma)
(!!) (Single) 5814WA GE NOS 1962-1963 (9/10.2ma)
(!!!!) (BEST PAIR 1960's) 6DJ8 Sylvania NOS 1960's (17.0/17.8ma and 14.5/19ma)
(!!!!) (Best Pair) 1L6 Sylvania NOS 1950 same date codes (20/16 and 19/16)
(!!!!) (Recommended Pair) 27 Philco by Sylvania NOS 1940's (6.4ma and 6.7ma)
(!!!!) (BEST PAIR) 309A Western Electric NOS 1960 (4.8ma and 5.1ma) (same Gm)
(!!!!) (Best Pair) 311B Amperex made in Russia NOS 1977 (34.2ma and 34.5ma) (very good construction)
