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6JK6 Sylvania branded RCA NOS 1970 era (7.2ma)
(!!!!) (Best Single #2) 12AU7=ECC82 Mullard UK shield logo NOS 1965 (11.2/12.6ma) (smooth rich sound)
(!!!!) (Single 1961) 12AU7=ECC82 Mullard BVA UK shield logo NOS 1961 (7.5/9ma) (Gf1 series) (smooth rich sound)
(!!!!) (Best Pair #2) 5814A Philips JAN NOS 1985 (10.5/8.2ma and 10/8.3ma) (close Gm)
JHY-6AK5 Hytron black plate NOS 1952 faded printing (6.2ma)
JHY-6AK5 Hytron black plate NOS 1952 faded printing (7.5ma)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (11.5/10.8ma) 1-5% section balance
57 Raytheon used/tests like new 1930's (46/31)
(!!!!) (Recommended Single) 12AX7 RCA Motorola black plates "D" getter tests like new 1953 (1.1/1.3ma and Gm=1600/1700)
(!!!!) (Single) 12AX7 RCA Motorola black plates "D" getter used/good 1953 (0.8/0.8ma and Gm=1400/1400) 1% section balance
(!!!) (Best Overall Pair #2) 5687WB GE branded CK5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (39/38.6ma and 38/37ma)
(!!!!) (BEST PAIR #1) CK-5687WB Raytheon black plates 1960's (Audio Note, Manley, Modwright) (33/34ma and 33/34.2ma) 1-2% matched
6GY6 US Brands NOS (10 tubes for $25)
(!) (Best Single) 6GH8A GE by EI Yugoslavia NOS copper grid posts 1970's (15.5/15.0ma)
(!!) (Best Single #2) 6EW7 Sylvania BIG BOTTLE NOS 1960's (5.3/46ma) (highest Ma and Gm)
(!) (BEST PAIR) 6GY6 RCA NOS 1971 (91/60 and 91/60)
(!) (Best Pair) 7C7 Sylvania chrome tops NOS 1952 (93/60 and 95/60)
(!) (Single) JHY-6AK5 Hytron black plate NOS 1952 (6.8ma)
(!) (Best Single #1) JHY-6AK5 Hytron black plate NOS 1952 (9.2ma)
JHY-6AK5 Hytron black plate NOS 1952 faded printing (6.0ma)
