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Preamp tubes

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(!!!) (Slightly microphonic Single) 12BH7A CBS Oval Black Plates

(!!!) (Slightly microphonic Single) 12BH7A CBS Oval Black Plates "U" getter NOS 1960 era (8.4/9.0ma)

$ 39.99
(!!!) (Slightly Microphonic Single) CV1985=6SL7GTY Brimar UK tests like new 1950's (2.2/2.2ma)

(!!!) (Slightly Microphonic Single) CV1985=6SL7GTY Brimar UK tests like new 1950's (2.2/2.2ma)

$ 99.99
(!!!) (slightly microphonic) 5687 Tungsol black plates

(!!!) (slightly microphonic) 5687 Tungsol black plates "U" getter halo branded GE NOS 1950's (36/40ma)

$ 29.99
(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)

(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)

$ 39.99
(!!!!) (Best Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.9ma and 3.0ma) 1-2% matched

(!!!!) (Best Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.9ma and 3.0ma) 1-2% matched

$ 188.88
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded Amperex NOS 1982 (14.0/15.2ma and 16.0/16.4ma)

(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded Amperex NOS 1982 (14.0/15.2ma and 16.0/16.4ma)

$ 49.99
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (14.0/15.2ma and 16.0/16.4ma) (Highest ma and Gm)

(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (14.0/15.2ma and 16.0/16.4ma) (Highest ma and Gm)

$ 49.99
(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (15.4/15.8ma and 14.4/16.0ma) (Highest ma and Gm)

(!!!) (~ Good Value Pair ~) 6DJ8 Russian USSR branded United and International NOS 1977-1980 (15.4/15.8ma and 14.4/16.0ma) (Highest ma and Gm)

$ 49.99
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1971 (7.2/8.0ma and 7.6/6.6ma) (close Gm)

(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1971 (7.2/8.0ma and 7.6/6.6ma) (close Gm)

$ 74.99
(!!!) (~ RECOMMENDED PAIR ~) 329A Western Electric NOS 1956 (33ma and 34ma)

(!!!) (~ RECOMMENDED PAIR ~) 329A Western Electric NOS 1956 (33ma and 34ma)

$ 149.99
(!!!) (Best Pair #3) 448A Western Electric tipped top used/good 1965-1966 (28ma and 29.2ma) (same Gm)

(!!!) (Best Pair #3) 448A Western Electric tipped top used/good 1965-1966 (28ma and 29.2ma) (same Gm)

$ 109.99
(!!!) (Best Pair #4) 7788 Amperex PQ USA gold pins NOS 1969-1974 (39.5ma and 43ma)

(!!!) (Best Pair #4) 7788 Amperex PQ USA gold pins NOS 1969-1974 (39.5ma and 43ma)

$ 134.99
(!!!) (Best Single 1953) JG-5814 GE NOS

(!!!) (Best Single 1953) JG-5814 GE NOS "square getter halo" and "short wide ribbed dark black plates" 1953 in white box (11.0/12.5ma)

$ 49.99
(!!!) (Best Value) 6SN7GT Sylvania used/good 1951 (7.8/12ma)

(!!!) (Best Value) 6SN7GT Sylvania used/good 1951 (7.8/12ma)

$ 29.99
(!!!) (Set of 10 tubes) 12AT7 GE NOS 1961 (set of 10 individual tubes)

(!!!) (Set of 10 tubes) 12AT7 GE NOS 1961 (set of 10 individual tubes)

$ 219.99
(!!!) (Good Value Single) 12AU7 EICO Holland used/good 1961 (8.0/9.6ma)

(!!!) (Good Value Single) 12AU7 EICO Holland used/good 1961 (8.0/9.6ma)

$ 49.99
(!!!) 12AU7WA Mullard branded Chelmer Valve used/good 1961 (7.7/8.8ma)

(!!!) 12AU7WA Mullard branded Chelmer Valve used/good 1961 (7.7/8.8ma)

$ 32.99
(!!!) 12AX7 Sylvania 1960-1965 used/tests like new small mica flake inside tube (Gm=2400/2800)

(!!!) 12AX7 Sylvania 1960-1965 used/tests like new small mica flake inside tube (Gm=2400/2800)

$ 42.99
(!!!) 12AY7 GE NOS rebranded Raytheon 1960's (2.8/3.4ma)

(!!!) 12AY7 GE NOS rebranded Raytheon 1960's (2.8/3.4ma)

$ 99.99
(!!!) 12BH7A RCA branded Zenith NOS 1970 era (10/13.2ma)

(!!!) 12BH7A RCA branded Zenith NOS 1970 era (10/13.2ma)

$ 54.99
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