(!!!!) (Best Single) 12AX7WA Sylvania NOS 1970's (Gm=3000/3100 and 2.5/2.5ma)
(!!!) (Best Single 1962) JHS-12AX7 Sylvania NOS 1962 (Gm=2600/2500 and 1.8/1.9ma)
(!!!) (BEST SINGLE 1964) AFLC-12AX7WA Sylvania NOS 1964 (Gm=1900/1900)
(!!!) (Best Single 1965) JHS-12AX7WA Sylvania NOS 1965 (1.3/1.5ma and Gm=1700/1800)
(!!!) (BEST SYLVANIA PAIR) JAN-12AX7WA Sylvania NOS 1973 (1.7/1.6ma and 1.8/2.0ma)
(!!!) (Best Value Single) 12AX7WA SIEMENS HALSKE GERMANY triple mica low hours/like new 1969 (1.0/1.2ma)
(!!) (Best Value) 12AX7=ECC83 Zaerix East Germany NOS 1970's (Gm=1500/1500) 1% section balance
(!!) (Recommended Single) JAN-12AX7WA Sylvania NOS 1974 (Gm=1600/1700 and
(!!) (Recommended Single) JAN-12AX7WA Sylvania NOS 1974 (Gm=2100/2300 and 1.7/1.9ma)
(!!) (Single) JAN-12AX7WA Sylvania NOS 1974 (Gm=1800/2500 and 1.5/2.1ma)
(!!) 12AX7WA GE printed 12AX7 B&L used/good 1970's (Gm=12001300) (0.7/0.8ma)
(!) 12AX7=CV492 RFT East Germany 1970's like new (Gm=1500/1500)