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(!!!!) (Best Overall Single) 6072 GE "5-Star" NOS black plates triple mica "O" getter halo 1960 (3.5/3.4ma) (mic grade) (Highest mA and Gm)
(!!!!) (Best Overall Single) ECC802S=12AU7 Telefunken Germany <> bottom NOS 1970 good printing (11.6ma and 11.5ma) (same Gm) 1-2% section balance
(!!!!) (Best Overall Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1967 (1.5/1.5ma and Gm=1800/1800) 1% section balance
(!!!!) (Best Overall Single) GZ37 Mullard UK NOS 1966 (52/40 and 52/40) 1% section balance
(!!!!) (Best Pair #1) 12AT7 RCA gray plates NOS 1970-1971 (11/10ma and 10.8/11.6ma) (Fender, VTL, Croft) 1-5% matched
(!!!!) (Best Pair #1) 12AX7 GE branded 12AX7A International NOS 1977 (1.3/1.3mA and 1.4/1.4ma) (Same Gm) 1-2% matched
(!!!!) (Best Pair #1) 6SL7GT Sylvania NOS black plates 1960's same build (2.0/2.0ma and 2.1/2.0ma) 1-3% matched (Eddie Current)
(!!!!) (BEST PAIR #1) EL84 Siemens Halske Germany NOS 1977 (46.5ma and 46ma)
(!!!!) (Best Pair #2) 6AC7 GE NOS 1980-1982 (10ma/11.2ma)
(!!!!) (Best Pair #2) EF86 ADZAM made by Valvo Germany NOS 1970 (3.1ma and 2.9ma) 1-5% matched
(!!!!) (Best Pair #3) 5881 Tungsol used/good 1960's (63.2ma and 66ma)
(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)
(!!!!) (Best Pair #4) 6AC7 GE NOS 1979-1982 (8ma/7.8ma)
(!!!!) (Best Pair 1960) 12AX7 GE tall gray ribbed plates "U" getter like new 1960 (1.2/1.2ma and 1.3/1.2ma) 1-3% matched
(!!!!) (Best Pair 1963) 5U4GB GE NOS 1963 same date codes (60-62/40 and 60-60/40 x 2 tubes)
(!!!!) (Best Pair 1966) CV378=GZ37 Mullard NOS 1966 (52-52/40 x 2 tubes) 1% matched
(!!!!) (Best Pair 1971) 12AX7 Philips Holland NOS 1971 (1.2/1.2ma and 1.2/1.3ma) 1-3% matched
(!!!!) (Best Pair for the money) 5Y3GT Philips Holland NOS 1960's (60-66/40 and 60-66/40)
(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (10.4/10.8ma and 10.4/10.0ma) (same Gm)
(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (11.4/10.6ma and 10.8/10.6ma) 1-3% matched (Highest Ma and Gm)
