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(!!!!) (Recommended Single) 6350 GE NOS 1960's (11.2/13.2ma)
(!!) 6AN8A Sylvania Magnavox NOS 1972 (14.5/14.8ma)
(!!!!) (Best Single #3) EF86 Telefunken Germany <> bottom NOS gray shield 1972 (2.8ma) (Neumann, Lawson, Soundelux, Manley)
(!!!!) (Slightlly microphonic single) JAN-CHS-12AU7 Sylvania "black plates" with "D" getter halo NOS 1951 (9.8/10ma)
(!!!!) (Single) 6922=E88CC Siemens Halske Germany branded RCA gray shield used 1966 (12/9.2ma)
(!!!!) (Best Pair #2) E80CC=6085 Philips Holland 1963-1972 (6.1/6.8ma and 6.2/7.1ma) (Highest mA and Gm)
(!!!!) 6AK5 GE NOS 1973 (10.2ma)
(!!!!) 76 RCA Cunningham used/good 1930's (4.8ma)
6AK5 Westinghouse NOS 1970 (6.6ma)
(!!!) (Best Pair) 12AT7 RCA gray plates NOS 1972-1974 (9.2/8.6ma and 9.6/8.4ma)
(!!!) (#1 19J6 Pair) 19J6 RCA "U" getter halo NOS 1952 same date codes
(!!!) (#1 286A) 286A Western Electric "top printing" NOS 1942-1945 (7.0ma)
(!!!) (Best Pair #3) 448A Western Electric tipped top used/strong 1965 (30ma and 32ma) (Matched on Amplitrex)
(!!!) (#1 56 National Union Pair) 56 National Union rebranded Western Electronics NOS 1940's (5.0ma and 5.2ma)
(!!!) (Single) 5755=420A Western Electric clear top tests like new 1952 (1.6ma/1.7ma)
(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)
(READ REVIEW) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (11.5/9.6ma and 12.2/9.5ma) (best sound)
(!!!) (#1 6BX7GT RCA single) 6BX7GT RCA NOS 1961 (41/48ma)
(!!!) (Best Pair #2) EC92=6AB4 Telefunken Germany <> bottom NOS 1965-1969 (7.5/7.8ma) (mic)
(!!!!) (Best Pair #1) 6DJ8 Philips ECG USA by Sylvania NOS 1987 (18/20ma and 16.5/18.5ma)
