(!!!) (Recommended Pair) 6C4WA GE JAN NOS 1971-1973 (8.8/9.0ma) 1-2% matched
(!!!) (Recommended Pair) E80CC=6085 ITT NOS and Philips Miniwatt SQ Holland like new 1970-1973 (6.8/8.0ma and 7.9/8.0ma) (Highest mA and Gm)
(!!!) (Recommended Single) 12AT7=ECC81 Mullard branded Raytheon NOS 1972 (11/13.2ma)
(!!!) (Recommended Single) 12AT7WC GE NOS 1975 (10.6/12.2ma)
(!!!) (Recommended Single) 6922=E88CC Tesla Czech Republic NOS 1972 (10.8/11.5ma)
(!!!) (Single) 396A Western Electric NOS 1985 (7.5/8.4ma)
(!!!) (Single) 396A Western Electric NOS 1986 (5.2/8.2ma)
(!!!) (Single) 396A Western Electric NOS 1986 (7.2/6.6ma)
(!!!) (Single) 396A Western Electric NOS 1986 (8.6/11.8ma)
(!!) (BEST SINGLE) ECL86=6GW8 Mullard branded POPE NOS 1964 (1.2ma and 43ma)
(!!) (Good Value Pair) 6021=CV3986 Mullard UK Mitcham plant NOS 1971 original boxes (4.8/6.3ma and 4.6/6.5ma)
(!!) (Recommended Pair) ECL86=6GW8 Mullard UK NOS 1964 and 1973 same build (1.5/1.3ma and 31/30ma)
(!!) (Recommended Single) 6BM8=ECL82 Philips Mullard NOS 1973 (1.8ma/49ma)
(!!) (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)
(!!) 5R4GYA GE Hewlett Packard brown base "D" getter halo NOS 1959 (51/40 and 52/40)
(!!) 5R4GYB RCA branded Westinghouse NOS 1970 large getter (50/40 and 52/40)
(!!) 5R4GYB RCA NOS 1962 large getter (54/40 and 50/40)
(!!) 5R4GYB RCA rebranded Raytheon NOS 1960's (50/40 and 53/40)