6V6GT TUBE USED TESTED 4 OF THE SAME BRAND KEN-RAD, HYTRON, RCA, TUNGSOL.
USED TESTED. All are USA made and tested. KEN-RAD, or HYTRON, or TUNGSOL or RCA. 6V6GT used tested tube valve. Our usual tube tester is the AVO VCM163. One of the best testers in the world.