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(!!!!!) (Best Overall Single) 12AU7=ECC82 Mullard BVA UK NOS 1972 (11.8/12.0ma) (Same Gm) 1-2% section balance
(!!!!!) (BEST PAIR #1) 12AU7=ECC82 Telefunken Germany smooth plates NOS 1968 fair printing (9.0/9.8ma and 10/8.8ma) (Same Gm) 1-3% matched
(!!!!!) (Best Pair #1) ECC82=12AU7 Philips Holland 1969 same date codes (11.0/11.5ma and 11.4/11.2ma) (sweet sound) 1-3% matched
(!!!!!) (Best Pair #2) ECC82=12AU7 Philips Holland NOS 1972 same date codes (11.2/11.4ma and 11.1/11.3ma) (sweet sound) 1-2% matched (Same Gm)
(!!!!!) (Best Single #1) 12AU7 Philips Holland NOS 1968 "O" halo (11.2/12.2ma) (same Gm) (sweet sound)
(!!!!!) (Best Single #2) 12AU7 Philips Holland NOS 1972 dimpled disc getter (10.8/11.5ma) 1-5% section balance
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!!) (Nice Single) ECC82=12AU7 Telefunken Germany <> bottom ribbed plates used/good 1957 (8.5/8.2ma) (strong Gm)
(!!!!!) (Single 1956) CV491=12AU7 Mullard UK "long plates" with "D" getter 1956 like new a few scratches on the glass (10.2ma and 8.2ma) (smooth rich textured sound) (rare)
(!!!!) (Best Pair #1) 12AU7WA=6189 RT Radio Technique France NOS 1961 (9.2/9.2ma and 9.2/9.0ma) 1-2% matched
(!!!!) (Best Pair #1) 12AU7WA=6189 RT Radio Technique France NOS 1961 (9.4/9.0ma and 9.2/9.2ma) (close Gm) 1-3% matched
(!!!!) (Best Pair #3) 12AU7WA=6189 RT Radio Technique France NOS 1961 (8.4/9.2ma and 8.4/9.0ma) 1-3% matched
(!!!!) (Best Single #1) 12AU7=ECC82 Mullard UK shield logo NOS 1965 (11.2/12.6ma) (smooth rich sound)
(!!!!) (Best Single #1) 12AU7WA=6189 RT Radio Technique France NOS 1961 (10.6/10.2ma) (High Gm)
(!!!!) (Best Single 1956) ECC82=12AU7 Siemens Halske "Long Ribbed Plates" and large/wide "U" getter branded Haltron 1956 (10/9.2ma) (k62 series) (High Gm) (rare)
(!!!!) (Best Single 1961) 12AU7=ECC82 Miniwatt Mullard UK NOS 1961 (9.8/10.2ma) (Gf1 series) (smooth rich sound)
(!!!!) (Best Value Single) 12AU7 Philips Miniwatt Holland like new 1961 large "O" getter halo (9.6/11ma)
(!!!!) (Best Value Single) ECC82=12AU7 Telefunken Germany <> Bottom ribbed plates NOS 1969 faded printing (10.8/10.0ma) (Highest Gm)
(!!!!) (Good Single 1950) 12AU7 Sylvania black plates "D" getter NOS 1950 (11/12.8ma)
(!!!!) (Single 1960) ECC82=12AU7 Philips Miniwatt Holland NOS 1960 (9.2/10.4ma) (sweet sound)
