(Buy it now is for 1 Matched Quad or 4 Tubes) KT88 - 98 New Stock SHUGUANG China.
Tubes are matched for GM and Current to 2% tolerance.
Precision Matched at Real life Working Voltages (35 Watts) on RCA WT 100 laboratory tester
Guaranteed to test new with no gas or shorts.Six-month replacement warranty.
Shipping $6 USA $21 to the world.