[en] The design and operation of the high-density Z-pinch experiment pulse-power supply is discussed. A 600-kV, 1-MA, 75-nH Marx bank is designed to charge a 1-Ω, 90-ns, water-insulated transmission line to approx. 0.6 to 1.0 MV. The water line is then discharged through a small laser-initiated current channel in 1 to 5 atm of hydrogen. The components of the Marx bank, the trigger system, the water line, and the gas load as well as the control system that uses fiber optics and air links for monitor and control are discussed