NOS RCA USA 12AU7A ECC82 MATCHED PAIR LONG-PLATE PLATINUM QUALITY TEST 2 TUBES
NOS RCA USA 12AU7A ECC82 MATCHED PAIR CLEAR-TOP MUSEUM QUALITY. ex·em·pla·ry RCA 12AU7A PAIR. REAL NOS 12AU7A = ECC82. NOS AUTHENTIC Amplitrex AT1000 TESTED RCA 12AU7A MATCHED PAIR. ALL TUBES HAVE THE RCA U.S.A. [12AU7A} ACID CODES. ].