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Preamp tubes

 
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(!!!) (Recommended Pair) 12SL7GT RCA black plates NOS 1974 (2.1/2.2ma and 2.3/2.4ma) (same Gm)

(!!!) (Recommended Pair) 12SL7GT RCA black plates NOS 1974 (2.1/2.2ma and 2.3/2.4ma) (same Gm)

$ 19.99
12SL7GT GE branded RCA NOS 1970's (2.2/2.4ma)

12SL7GT GE branded RCA NOS 1970's (2.2/2.4ma)

$ 8.99
12SL7GT GE NOS 1966 (2.0/2.3ma)

12SL7GT GE NOS 1966 (2.0/2.3ma)

$ 9.99
(!!) (Best Pair) 12SL7GT GE NOS 1973 (2.9/2.9ma and 2.7/2.6ma)

(!!) (Best Pair) 12SL7GT GE NOS 1973 (2.9/2.9ma and 2.7/2.6ma)

$ 19.99
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