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Preamp tubes

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6U9 GE Holland NOS 1970's

$ 3.99
6V7G Sylvania branded GM GENUINE PARTS engraved base tests like new

6V7G Sylvania branded GM GENUINE PARTS engraved base tests like new

$ 5.50
6V7G Sylvania NOS 1940's reboxed

6V7G Sylvania NOS 1940's reboxed

$ 5.50

6V8 NOS

$ 3.99

6X9=ECF200 NOS

$ 3.99
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1958 and 1970 (10.3ma and 11ma)

(!!) (Recommended Pair) 6SH7 GE metal can NOS 1958 and 1970 (10.3ma and 11ma)

$ 11.99
(READ REVIEW) 5654=6AK5 Raytheon Toshiba Japan NOS 1970's (7.2ma and 7.3ma) (same Gm)

(READ REVIEW) 5654=6AK5 Raytheon Toshiba Japan NOS 1970's (7.2ma and 7.3ma) (same Gm)

$ 0.00
(!!) (Single) 6F8G Philco by Sylvania parallel plates used/good 1940's (10.2ma and 7.2ma) (close Gm)

(!!) (Single) 6F8G Philco by Sylvania parallel plates used/good 1940's (10.2ma and 7.2ma) (close Gm)

$ 39.99
ECH81=6AJ8 Tungsram Hungary branded Telefunken tests like new 1970's (6.5ma and 10.6ma) (strong Gm)

ECH81=6AJ8 Tungsram Hungary branded Telefunken tests like new 1970's (6.5ma and 10.6ma) (strong Gm)

$ 10.99
(!!!!) (Best Pair #2) 5670W GE NOS 1986 (9.4/11ma and 9.8/11.6ma) 1-5% matched (Highest Ma and Gm)

(!!!!) (Best Pair #2) 5670W GE NOS 1986 (9.4/11ma and 9.8/11.6ma) 1-5% matched (Highest Ma and Gm)

$ 48.88
(!!!!) (Single) E88CC=6922 Mullard Holland SQ used/good 1965 (10.2/9.5ma) (3D MIDS) (Good Gm)

(!!!!) (Single) E88CC=6922 Mullard Holland SQ used/good 1965 (10.2/9.5ma) (3D MIDS) (Good Gm)

$ 69.99
(READ REVIEW) 6AC7 RCA NOS 1957-1965 (9.2/9.2ma) 1-2% matched

(READ REVIEW) 6AC7 RCA NOS 1957-1965 (9.2/9.2ma) 1-2% matched

$ 0.00
(BEST VALUE) ECC808=6KX8 Telefunken Diamond Bottom <> NOS 1969 faded printing from rubbing inside box (0.8/1.0ma Gm=1350/1500)

(BEST VALUE) ECC808=6KX8 Telefunken Diamond Bottom <> NOS 1969 faded printing from rubbing inside box (0.8/1.0ma Gm=1350/1500)

$ 69.99
6CS7 GE branded Tungsol NOS 1961 era (21/11ma)

6CS7 GE branded Tungsol NOS 1961 era (21/11ma)

$ 27.99
(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's (7.2/9.5ma and 6.5/9.4ma)

(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's (7.2/9.5ma and 6.5/9.4ma)

$ 49.99
(!) 5687 Raytheon part bronze part black plates used/tests like new 1960 (33/38ma)

(!) 5687 Raytheon part bronze part black plates used/tests like new 1960 (33/38ma)

$ 29.99

6DR7 GE NOS 1965 (1.1ma/36ma)

$ 6.99
(!!!) (Recommended Pair) 12A National Union NOS 1950 era different shape top mica (8.5ma and 8.1ma)

(!!!) (Recommended Pair) 12A National Union NOS 1950 era different shape top mica (8.5ma and 8.1ma)

$ 74.99
(!!!!) (Best Single) JAN-5687WB GE NOS 1972 (34.6/35.6ma)

(!!!!) (Best Single) JAN-5687WB GE NOS 1972 (34.6/35.6ma)

$ 59.99
7B7 Tungsol NOS 1949

7B7 Tungsol NOS 1949

$ 29.99
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