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(!!) (Best Value Single) 12AX7=ECC83 Mullard Bogen UK used/good 1966 (Gm=1300/1300) 1% section balance
(!!) (Good Value Single) 12AX7=ECC83 Telefunken Germany <> bottom ribbed plates used/very good 1960 era (Gm=1300/1400 and 1.1/1.1ma)
(!!) (Good Value Single) 12AX7A GE NOS 1976 (0.9/1.3mA and Gm=1400/1800)
(!!) (Good Value) 12AX7 Siemens Halske Germany rebranded "BOGEN" used/good 1960 (161 Series) (Gm=1400/1500 and 0.8/0.9ma)
(!!) (Recommended Single) JAN-12AX7WA Sylvania NOS 1974 (Gm=2100/2300 and 1.7/1.9ma)
(!!) (Single) 12AX7 Sylvania used/good 1959 (1.6/1.5ma)
(!!) (slightly microphonic) 12AX7 Sylvania Zenith black ribbed plates "D" getter NOS/80% 1953 (Gm=1300/1400 and 0.9/1.0ma)
(!!) 12AX7 GE branded Video black plates D getter 1957 used mis-matched triode sections (1.1ma/0.6ma)
(!!) 12AX7 Sylvania branded Philco NOS 1965 (Gm=2400/2400 and 1.6/1.5ma) 1-3% section balance
(!) (Best Value) 7025A=12AX7A China branded International Yugo NOS 1990's (1.0/0.9ma and Gm=1700/1600)
(!) (Good Value) 12AX7WXT Sovtek NOS 1990's (Gm=1500/1400 and 0.9/0.8ma)
(!) (slightly microphonic single) CV4004=12AX7 Mullard NOS 1981 (1.3/2.1ma)
(READ REVIEW) 12AX7 BRIMAR England shiney black ribbed plates "D" getter 1955 (rare)
** 9 pin ceramic pc mount socket with standard pins (0 in stock)
7729=12AX7 Raytheon Uniline Gold Pins (sold out)
9 pin ceramic chassis mount socket with gold-plated pins and mounting bracket (0 in stock)
9 pin ceramic pc mount socket with gold-plated pins (10 in stock)
9 pin ceramic pc mount socket with standard pins (13 in stock)
9 pin ceramic TOP chassis mount socket with mounting bracket (1 in stock)
ECC83=12AX7 East Germany used/good 1970's in white box (1.0/0.7ma)
