(!!!) (BEST SINGLE 1964) AFLC-12AX7WA Sylvania NOS 1964 (Gm=1900/1900)
(!) 6DJ8 Mullard England branded Amperex "A" frame like new 1986 (12.6/13.4ma)
JAN-7788 Amperex USA NOS 1986 (54ma)
