(!!!!!) (Best Pair 1963) 12AX7=ECC83 Mullard UK made for Knight like new ribbed plates 1963 (161 series) (1.0/1.0ma and 0.9/1.0ma) (1-3% matched)
(!!!!!) (Best Single 1961) EF86 Amperex Bugle Boy France NOS 1961 (3.1ma)
(!!!!!) (Best Single 1965) EF86 Amperex Bugle Boy Holland Belgium plant NOS 1965 (4.5ma)
(!!!!!) (Best Single 1966) EF86 Amperex Bugle Boy Holland Belgium plant NOS 1966 (3.9ma)
(!!!!) (Best Single 1965) ECC82=12AU7 Miniwatt Holland like new 1965 (9.4/9.4ma) 1% section balance
(!!!!) (Recommended Quad) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971 (9.8/9.8/10.0/10.2ma)
(!!!) (Best Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (13.4ma and 13.5ma) 1% matched
(!!!) (Best Value Single) EF86 Mullard made by Valvo in Hamburg Germany NOS 1969 (4.8ma) (highest mA and Gm)
(!!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (14.0ma and 14.2ma)
(!!!) (Recommended Single) 12AY7 Tungsol tall gray ribbed plates rebranded Raytheon NOS "D" getter 1950's (3.3/4.0ma)
(!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (17ma and 18ma) (Highest mA and Gm)
(!) ECC82=12AU7 Valvo Holland used/good 75-90% 1968 (7.8/9.0ma)
12AT7 Mullard branded Amperex Globe Logo 1967 used/good (6.6ma/7.2ma)
6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (8 in stock)