DollaTek Matched Pair 7 Pin GE JAN 5654W Vacuum Tubes Upgrade for 6AK5/6J1/6GB/01/EF95/6J1P Vacuum Tubes

Description:We subject these tubes to multiple test cycles and plate voltages to determine stability. In addition to ip, Gm, leakage/gas, noise and life testing, the matched tubes undergo a final audio sound check to make certain they are indeed audio quality. Tubes that show the slightest abnormality are rejected. With our high standards, less than 50% of the NOS 5654W tubes we test are consid...