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Preamp tubes

 
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(!!!) (Pair) 6FQ7 RCA clear top NOS

(!!!) (Pair) 6FQ7 RCA clear top NOS "O" getter halo 1970's (6.6/6.0ma and 6.0/6.4ma) (close Gm)

$ 89.99
(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)

(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)

$ 47.99
(!!!!) (Single) 6CG7 Tungsol NOS 1960 era black shield between plates - pin #3 slightly shorter (8.6ma/10ma)

(!!!!) (Single) 6CG7 Tungsol NOS 1960 era black shield between plates - pin #3 slightly shorter (8.6ma/10ma)

$ 34.99
(!!!) (Best Single) 6FQ7 RCA clear top NOS 1966 (7.2/8.2ma) (STAX, MARANTZ, CONRAD JOHNSON)

(!!!) (Best Single) 6FQ7 RCA clear top NOS 1966 (7.2/8.2ma) (STAX, MARANTZ, CONRAD JOHNSON)

$ 59.99
(!!!!) (Recommended Pair) 6FQ7 Zenith by GE NOS 1977 (6.5/10.6ma and 6.7/9.2ma)

(!!!!) (Recommended Pair) 6FQ7 Zenith by GE NOS 1977 (6.5/10.6ma and 6.7/9.2ma)

$ 49.99
(!!!) (Best Pair) 6FQ7 GE NOS 1970's (9.8/8.8ma and 8.5/9.6ma) (close Gm)

(!!!) (Best Pair) 6FQ7 GE NOS 1970's (9.8/8.8ma and 8.5/9.6ma) (close Gm)

$ 59.99
(!!!!) (Recommended GE Pair) 6FQ7 Zenith by GE NOS 1977 1-3% matched (7.0/7.6m and 6.8/7.5ma)

(!!!!) (Recommended GE Pair) 6FQ7 Zenith by GE NOS 1977 1-3% matched (7.0/7.6m and 6.8/7.5ma)

$ 59.99
6CG7 Sylvania Emerson used/good chrome electrostatic shield between plates

6CG7 Sylvania Emerson used/good chrome electrostatic shield between plates "U" getter 1957 (6.2/6.8ma)

$ 17.99
6CG7 GE used/good gray electrostatic center shield between plates

6CG7 GE used/good gray electrostatic center shield between plates "O" getter halo 1960 (6.2/6.8ma)

$ 19.99

6FQ7 US Brands used/pull-outs sold as-is (10 for $29.99)

$ 29.99
(!!!) (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
(!!!!) (Best Pair) 6FQ7 GE NOS 1960's (7.5/8.0ma and 7.0/7.2ma) (Close Gm) 1-5% matched

(!!!!) (Best Pair) 6FQ7 GE NOS 1960's (7.5/8.0ma and 7.0/7.2ma) (Close Gm) 1-5% matched

$ 59.99
(!!!!) (Best Pair) 6FQ7 Zenith by GE NOS 1977 (7.2/8.0ma and 7.0/7.8ma)

(!!!!) (Best Pair) 6FQ7 Zenith by GE NOS 1977 (7.2/8.0ma and 7.0/7.8ma)

$ 59.99
(!!) (Best Value Pair) 6FQ7 GE branded Amperex and Westinghouse NOS 1970's (6.4/7.4ma and 6.4/7.4ma) 1-2% matched

(!!) (Best Value Pair) 6FQ7 GE branded Amperex and Westinghouse NOS 1970's (6.4/7.4ma and 6.4/7.4ma) 1-2% matched

$ 47.99
(!!) (BEST SINGLE) 6CG7 RCA clear top chrome shield NOS 1960's (10ma/9.4ma)

(!!) (BEST SINGLE) 6CG7 RCA clear top chrome shield NOS 1960's (10ma/9.4ma)

$ 49.99
6FQ7 Realistic by GE NOS gold plated pins 1970's (8/6ma)

6FQ7 Realistic by GE NOS gold plated pins 1970's (8/6ma)

$ 24.99
(!) (Best Value Single) 6FQ7 GE branded RCA NOS 1966 (7.6/7.2ma)

(!) (Best Value Single) 6FQ7 GE branded RCA NOS 1966 (7.6/7.2ma)

$ 31.99
(!!!) (Single) 6FQ7 RCA clear top NOS 1966 (6/7ma) (STAX, MARANTZ, CONRAD JOHNSON) (Copy)

(!!!) (Single) 6FQ7 RCA clear top NOS 1966 (6/7ma) (STAX, MARANTZ, CONRAD JOHNSON) (Copy)

$ 47.99
(!!!) (Best Single) 6FQ7 RCA clear top NOS 1970 (9.0/9.2ma) (STAX, MARANTZ, CONRAD JOHNSON)

(!!!) (Best Single) 6FQ7 RCA clear top NOS 1970 (9.0/9.2ma) (STAX, MARANTZ, CONRAD JOHNSON)

$ 69.99
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