(!!!!) (Best GE Single 1963) 12AX7 GE tall ribbed plates NOS 1963 (Gm=1500/1500) (1.0/1.0ma) 1% section balance
(!!!!) (Best GE Single) 12AX7A GE NOS 1967 (Gm=1550/1700) (1.2/1.4ma)
(!!!) (Best Pair) 6BX7GT Tungsol tall bottle NOS 1960 era (73/75ma and 73/81ma)
