12AX7 ECC83 12AX7A. O Getter Tube. Short Grey PLATE. TUBE’s TEST RESULT’s TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! Perfect Balanced “short” Grey Plates!
12AX7 ECC83 12AX7A. O Getter Tube. Short Grey PLATE. TUBE’s TEST RESULT’s TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! Perfect Balanced “short” Grey Plates!