(!!!!) (Recommended Single) GZ37 Mullard UK NOS 1967 (50/40 and 50/40)
(!!!!) (SINGLE) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (9.8ma/13.4ma)
(!!!!) 6336A Tungsol branded Heintz and Kaufman 1960's (62/76ma) ***
(!!!) (#1 374A) 374A Western Electric black plate used/test like new 1960's (21-25ma) (11 in stock)
(!!!) (3rd Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.6/2.0ma and 1.6/2.0ma) 1% matched
(!!!) (4th Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.7/1.8ma and 1.8/1.9ma)
(!!!) (Best GE Pair) JAN-5751 GE NOS 1981-1982 (2.7/2.8ma and 2.6/2.9ma) 1-3% matched
(!!!) (Best Mullard Single) ECF80=6BL8 IEC Mullard UK NOS 1966 (16ma/12ma) (Highest mA and Gm)
(!!!) (Best Pair) 407A Western Electric NOS "O" getter 1979-1983 (46-42/26 and 46-42/26)
(!!!) (Best Pair) 6BM8=ECL82 Philips Holland made in Belgium NOS 1969 (1.8ma/31ma and 1.9/30ma) 1-2% matched
(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.8/1.9ma and 1.8/2.0ma)
(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.9/2.1ma and 2.1/2.1ma)
(!!!) (Best Siemens Pair) EL84 Siemens Halske Germany 1966-1969 (40ma and 42.5ma)
(!!!) (Best Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.7/2.7ma) (1-2% section balance)
(!!!) (Best Single 1965) JHS-12AX7WA Sylvania NOS 1965 (1.3/1.5ma and Gm=1700/1800)
(!!!) (Best Single) 6DJ8 Amperex Bugle Boy Holland like new 1965 (16.8/15.5ma)
(!!!) (Best Single) ECC82=12AU7 Philips Holland branded SONOTONE NOS 1960 (10.6/12ma)
(!!!) (Best Value Pair) E80CF=7643 Valvo Germany branded International NOS 1961-1963 (PREMIUM 6BL8 SUB) (Tuners) 1-5% matched
(!!!) (Best Value Single) E80CF=7643 Valvo Germany branded International NOS 1961 (12.8/18mA) (PREMIUM 6BL8 SUB) (Tuners)
(!!!) (Best Value Single) E80CF=7643 Valvo Germany branded International NOS 1963 (10.8/13.4mA) (PREMIUM 6BL8 SUB) (Tuners)
