(!!!!!) (Best Pair 1959) 6DJ8=ECC88 Philips Miniwatt Holland large "O" getter halo NOS 1959 etched section on each tube (18.6/15.4ma and 16.4/15.8ma)
(!!!!!) (Best Pair 1975) 6DJ8=ECC88 Philips Holland NOS 1975 (16.0/16.2ma and (15.0/17.4ma)
(!!!!!) (Best Single #1) 12AU7 Mullard UK "long plates" and "O" getter 1958 low hours/like new (10.8ma and 11ma) (High mA and Gm)
(!!!!!) (Best Single 1958 #2) 12AU7 Mullard UK "long plates" and "O" getter 1958 used/very good (9.4ma and 9.6ma)
(!!!!!) (Best Single) 6DJ8=ECC88 Philips Miniwatt Holland "O" getter 1965 (21/23ma) (Highest mA and Gm)
(!!!!!) (Recommended Pair) 12AU7=ECC82 Philips Mullard UK NOS 1966-1974 same build (10.6/10.3ma and 11.7/10.4ma) (close Gm matching) (Rogue, Hovland, Audio Note)
(!!!!!) (Single 1958) EF86 Amperex Bugle Boy Holland "D" getter used/very good 1958 (3.1ma)
(!!!!) (2nd Best Amperex PQ Single) 6922 Amperex PQ USA NOS 1962 (14.5/16.2ma) (Audio Research, Nova)
(!!!!) (2nd Best Single) 5842=417A Amperex "PQ" Holland "D" getter Gold Pins NOS 1956-1959 (23ma)
(!!!!) (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)
(!!!!) (Best Amperex PQ Single) 6922 Amperex PQ USA NOS 1962 (19.0/18.2ma) (Audio Research, Nova)
(!!!!) (Best Pair) 311B Amperex made in Russia NOS 1977 (34.2ma and 34.5ma) (very good construction)
(!!!!) (Best Single #1) 12AT7 Amperex Mullard UK NOS 1973 (11.0/11.2ma)
(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)
(!!!!) (Best Single) 5842=417A Amperex "PQ" Holland "D" getter Gold Pins NOS 1956-1959 (35ma)
(!!!!) (Best Single) EZ81=6CA4 Philips Australia NOS 1974 (58/40 and 58/40) (similar sound to EZ81 Holland) 1% section balance
(!!!!) (BEST SINGLE) JAN-6922 Amperex USA globe logo gold pins NOS 1967 (12/15ma)
(!!!!) (Long Plate Single) 12AU7 Mullard Heath UK long plates "O" getter used/good 1959 (8.8/9.0ma)
(!!!!) (NICE SINGLE) JAN-6922 Amperex USA like new 1971 (13.4/12.6ma)
(!!!!) (Read Review) 12AX7A=ECC83 Matsushita Japan NOS rebranded Raytheon NOS 1970 era (Gm=1800/1800 and 1.5/1.3ma) (similar to Mullard)