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Preamp tubes

 
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(!!!) (slightly microphonic) JRC-5751WA RCA black plates triple mica D getter 1957 NOS (2.3ma/2.2ma) (1-3% section balance

(!!!) (slightly microphonic) JRC-5751WA RCA black plates triple mica D getter 1957 NOS (2.3ma/2.2ma) (1-3% section balance

$ 99.99
(!!) 5751W1 Sylvania triple mica

(!!) 5751W1 Sylvania triple mica "O" getter halo used/good early 1960's misbranded 12AX7WA (1.8/2.0ma)

$ 44.99
(!!!) (Best Pair) JRC-5751 RCA NOS black plates double mica 1962 (2.7/2.3ma and 2.7/2.9ma) (similar to Command Series)

(!!!) (Best Pair) JRC-5751 RCA NOS black plates double mica 1962 (2.7/2.3ma and 2.7/2.9ma) (similar to Command Series)

$ 198.88
(!) 5751 GE gray plates double mica used/good 1970's no printing (2.0/2.3ma)

(!) 5751 GE gray plates double mica used/good 1970's no printing (2.0/2.3ma)

$ 24.99
(!!!!) (Best Single) JG-5751WA GE black plates triple mica U getter 1957 NOS (2.6/2.3ma) (Same Gm)

(!!!!) (Best Single) JG-5751WA GE black plates triple mica U getter 1957 NOS (2.6/2.3ma) (Same Gm)

$ 144.44
(!!!!) (Best Pair) 5751 RCA black plates NOS 1976 (2.5/3.1ma and 2.5/2.8ma) (Best Audio Grade 5751)

(!!!!) (Best Pair) 5751 RCA black plates NOS 1976 (2.5/3.1ma and 2.5/2.8ma) (Best Audio Grade 5751)

$ 249.99
(!!) (Good Value Single) JAN-5751 GE double mica gray plates NOS 1987 (2.5/2.6ma) 1-2% section balance

(!!) (Good Value Single) JAN-5751 GE double mica gray plates NOS 1987 (2.5/2.6ma) 1-2% section balance

$ 49.99
(!!) JAN-5751 Sylvania branded Philips NOS 1983 (2.4/2.5ma) 1-2% section balance (High Gm) (Mapletree)

(!!) JAN-5751 Sylvania branded Philips NOS 1983 (2.4/2.5ma) 1-2% section balance (High Gm) (Mapletree)

$ 49.99
(!!!) (Recommended Single) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)

(!!!) (Recommended Single) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)

$ 59.99
(!!!) (Best Pair) 5751 GE double mica gray plates NOS 1979-1981 (2.4/2.5ma and 2.3/2.6ma) 1-3% matched (Close Gm)

(!!!) (Best Pair) 5751 GE double mica gray plates NOS 1979-1981 (2.4/2.5ma and 2.3/2.6ma) 1-3% matched (Close Gm)

$ 139.99
(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)

(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)

$ 139.99
(!!!) (Recommended Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/1.9ma and 1.9/1.8ma) (same Gm)

(!!!) (Recommended Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/1.9ma and 1.9/1.8ma) (same Gm)

$ 119.99
(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.9/1.9ma)

(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.9/1.9ma)

$ 44.99
(!!!!) (Slightly microhonic Single) 5751 RCA Hewlett Packard black plates NOS 1968 (2.4/2.6ma)

(!!!!) (Slightly microhonic Single) 5751 RCA Hewlett Packard black plates NOS 1968 (2.4/2.6ma)

$ 39.99
(!!!!) (PAIR) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.0/2.2ma and 1.8/2.2ma) (rare)

(!!!!) (PAIR) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.0/2.2ma and 1.8/2.2ma) (rare)

$ 119.99
(!!!) (SINGLE) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.2/2.6ma)

(!!!) (SINGLE) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.2/2.6ma)

$ 69.99
(!!) 12AX7 Baldwin Sylvania

(!!) 12AX7 Baldwin Sylvania "D" getter used/tests like new 1959 (1.9/1.9ma) 1% section balance

$ 79.99
(!!!) (Best Value Single) 12AX7 Baldwin Sylvania

(!!!) (Best Value Single) 12AX7 Baldwin Sylvania "D" getter used/tests like new 1959 (2.1/2.0ma) (Highest mA and Gm) 1-2% section balance

$ 68.88
(!) 5751 GE gray plates double mica used/very good 1960's no printing (2.2/2.1ma) (strong Gm)

(!) 5751 GE gray plates double mica used/very good 1960's no printing (2.2/2.1ma) (strong Gm)

$ 27.99
(!!) JG-5751 GE triple mica gray plates

(!!) JG-5751 GE triple mica gray plates "O" getter halo NOS 1961

$ 59.99
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