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(slightly microphonic) 12BH7 GE Zenith NOS "U" getter 1953 (10.0/10.6ma)
(!!!!!) (Best Overall Pair) 6C10 GE rebranded RCA NOS 1960's (Ampeg / Fender) (1.6ma/1.5ma/1.4ma) and (1.5ma/1.8ma/1.4ma)
(!!!!!) (Best Overall Pair) 6C10 GE rebranded RCA NOS 1960's (Ampeg / Fender) (1.6ma/1.6ma/1.3ma) and (1.6ma/1.3ma/1.7ma) (Best Pair in the World)
(!!!!) (Single) 5691 RCA branded GE red base black plates NOS 1960's a few vertical scratches on base (2.1ma/2.3ma)
(!!!!!) (Recommended Pair) 6DJ8 Sylvania NOS 1970-1972 era (15.2/17.2ma and 13.5/17.4ma) (good detail and smooth)
(!!!!) (Best Single) USN-CHS-6922 Sylvania gold pins NOS 1965 (12/16.6ma)
(!!!!!) (Best Value Pair) 12AT7=ECC81 Telefunken Germany Diamond Bottom <> used/good 1960's (7.6/6.2ma and 6.2/7.2ma)
(!!!) (Best Value Pair) 6350 Sylvania rebranded United black ribbed plates NOS "U" getter 1957 (10.0/10.2ma and 10.5/9.5ma)
(!!!!!) (Recommended Pair) 6C10 GE rebranded RCA NOS 1960's (Ampeg / Fender) (1.0ma/1.2ma/1.2ma) and (1.0ma/1.1ma/1.3ma)
(!!!!!) (Recommended Pair) 6C10 GE rebranded Westinghouse NOS 1970 era (Ampeg / Fender) (1.3ma/1.4ma/1.2ma) and (1.3ma/1.2ma/1.1ma)
(!!!!!) (Slightly Microphinic Single 1962) 12AX7A Mullard UK branded KNIGHT NOS 1962 (1.3/1.1mA and Gm=1800/1800)
(!!!!) (Best Pair #1) ECC802S=12AU7 Telefunken Germany <> bottom NOS 1964-1967 1-2% matched (10.4/1.6ma and 10.2/10.4ma) (same Gm) (best sound)
(!!!!) (Best Single #2) ECC802S=12AU7 Telefunken Germany <> bottom NOS 1964 good printing (11.0ma and 11.7ma)
(!!!!) (Best Holland Pair) EF86 ADZAM Holland NOS 1963-1964 (3.5ma and 3.5ma) 1-3% matched
(!!!!) (Best Pair) 6N7 GE metal can NOS 1954-1955 (3.3/3.1ma and 3.1/3.1ma) 1-2% matched
(!!!!) (Single) 6DJ8 Philips Holland low hours/like new 1967 (13.6/14.4ma) (sonically the same as Bugle Boy)
(!!!!) (Best Value) 7308 Sylvania branded RCA NOS 1973 (13.2/17.2ma)
(!!) (Single) 5814WA GE NOS 1962-1963 (9/10.2ma)
(!!!!) (Best Pair) 1L6 Sylvania NOS 1950 same date codes (20/16 and 19/16)
(!!!!) (BEST PAIR) 309A Western Electric NOS 1960 (4.8ma and 5.1ma) (same Gm)
