Update on May 24, 2021, MOPA input voltage is suitable for 120VAC/220VAC. Please tell me the voltage used in your home when purchasing. The basic principle of the Rife MOPA I made is the same as the GB4000 MOPA, but the plasma tube can output more power. The following are the differences from GB4000 MOPA: … Continue reading Rife machine M.O.P.A. for sale ，more output power than GB4000 MOPA