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Preamp tubes

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(!!!!) (Best Pair) 311B Amperex made in Russia NOS 1977 (34.2ma and 34.5ma) (very good construction)

(!!!!) (Best Pair) 311B Amperex made in Russia NOS 1977 (34.2ma and 34.5ma) (very good construction)

$ 79.99
(!!!!) (Best Pair #1) 6U8A Philips by Sylvania NOS 1986 (16.8/8.6ma and 17.5/8.5ma) 1-3% matched

(!!!!) (Best Pair #1) 6U8A Philips by Sylvania NOS 1986 (16.8/8.6ma and 17.5/8.5ma) 1-3% matched

$ 34.99
(!!!!) (Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.7ma and 2.6ma) 1-2% matched

(!!!!) (Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.7ma and 2.6ma) 1-2% matched

$ 144.44
(!!!!) (Best Pair) D3a=7721 Siemens Germany NOS 1978 (32.5/33ma) 1% matched

(!!!!) (Best Pair) D3a=7721 Siemens Germany NOS 1978 (32.5/33ma) 1% matched

$ 0.00
(!!!!) (Good Value Pair) 5842Q Raytheon NOS 1983 (20ma and 20.6ma) 1-2% matched

(!!!!) (Good Value Pair) 5842Q Raytheon NOS 1983 (20ma and 20.6ma) 1-2% matched

$ 69.99
(!!!!) (Best Single #1) 6C10 GE rebranded RCA NOS 1960's (Ampeg / Fender) (1.3ma/1.3ma/1.0ma)

(!!!!) (Best Single #1) 6C10 GE rebranded RCA NOS 1960's (Ampeg / Fender) (1.3ma/1.3ma/1.0ma)

$ 149.99
(!!!!) (Best Pair #1) 12AX7A Sylvania NOS 1970's (2.3/2.0ma and 2.1/2.3ma)

(!!!!) (Best Pair #1) 12AX7A Sylvania NOS 1970's (2.3/2.0ma and 2.1/2.3ma)

$ 179.99
(!!!!) (Best Single #1A) 6C10 RCA branded Westinghouse NOS 1971 (Ampeg / Fender) (1.4ma/2.0ma/1.5ma) (Strongest Single)

(!!!!) (Best Single #1A) 6C10 RCA branded Westinghouse NOS 1971 (Ampeg / Fender) (1.4ma/2.0ma/1.5ma) (Strongest Single)

$ 158.88
(!!!!) (Best Pair) CX-301-A Cunningham used/good 1928-1930 era (2.6ma and 2.5ma) (same Gm)

(!!!!) (Best Pair) CX-301-A Cunningham used/good 1928-1930 era (2.6ma and 2.5ma) (same Gm)

$ 69.99
(!!) (Single) 6SN7WGT Sylvania brown base used/good 1954 some nicks on base (6.0/7.2ma)

(!!) (Single) 6SN7WGT Sylvania brown base used/good 1954 some nicks on base (6.0/7.2ma)

$ 39.99
(!!!!) (Best Tungsol Pair 1959) 12AU7A Tungsol ribbed plates NOS

(!!!!) (Best Tungsol Pair 1959) 12AU7A Tungsol ribbed plates NOS "U" getter halo 1959 (8.5/8.8ma and 8.8/7.8ma)

$ 119.99
(!!!!) (Single) 12AY7 GE branded Raytheon black box plates

(!!!!) (Single) 12AY7 GE branded Raytheon black box plates "D" getter 1953 era in white box (3.3/3.1ma) (Same Gm)

$ 99.99
(!!!!!) (BEST PAIR #1) 417A Western Electric NOS 1980 (42.5ma and 43ma)

(!!!!!) (BEST PAIR #1) 417A Western Electric NOS 1980 (42.5ma and 43ma)

$ 279.99
(!!) (BEST PAIR) 6EU7 GE NOS 1970-1978 (46-47/32 and 47-47/32) 1-2% matched

(!!) (BEST PAIR) 6EU7 GE NOS 1970-1978 (46-47/32 and 47-47/32) 1-2% matched

$ 89.99
(!!!!) (Best Value Single) 12AU7=ECC82 Philips by Mullard UK ribbed plates used/good 1969 (8.2/8.2ma) 1% section balance

(!!!!) (Best Value Single) 12AU7=ECC82 Philips by Mullard UK ribbed plates used/good 1969 (8.2/8.2ma) 1% section balance

$ 49.99
(!!!) (Single) 12AU7=ECC82 Mullard BVA UK ribbed plates used/good 1970 Mitcham plant (8.4/8.2ma) (sweet sound)

(!!!) (Single) 12AU7=ECC82 Mullard BVA UK ribbed plates used/good 1970 Mitcham plant (8.4/8.2ma) (sweet sound)

$ 79.99
(!!!!) (Single 1950's) 12BH7A RCA branded Westinghouse narrow black plates NOS

(!!!!) (Single 1950's) 12BH7A RCA branded Westinghouse narrow black plates NOS "U" getter mid-1950's (10.6/7.4ma) (1st series made)

$ 64.99
(!!!!) (Good Value Pair) 5842Q Raytheon NOS 1983 (19ma and 20ma) 1-3% matched

(!!!!) (Good Value Pair) 5842Q Raytheon NOS 1983 (19ma and 20ma) 1-3% matched

$ 59.99
(!!!!) (Good Value Single 1964) PCC88=7DJ8 Philips Miniwatt Holland

(!!!!) (Good Value Single 1964) PCC88=7DJ8 Philips Miniwatt Holland "O" getter NOS 1964 (10.5/16.2ma)

$ 59.99
(!!!!) (Pair) JAN-5842WA Raytheon NOS 1984 (17.5ma and 17.6ma) 1-2% matched

(!!!!) (Pair) JAN-5842WA Raytheon NOS 1984 (17.5ma and 17.6ma) 1-2% matched

$ 49.99
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