We are using Kempact Pulse 3000 that is a great combination of power, capacity and welding refinement. It features synergic, pulsed and double-pulsed welding, and its standard programs suit a variety of materials including Fe, FeMc, FeFc, St/St, Alu, CuSi3, CuAl8 fillers wires. Synergic, pulsed and double-pulsed welding. 4-roll wire drive system. Electronic power regulation. Maximum output at 40% duty cycle. Suitable for power generator use. 100 memory channels for quick and easy welding parameter adjustment. Handheld or on-torch remote control options.