• AC and DC output for aluminum and non-ferrous alloys, stainless, mild steel & chrome moly. • AC Frequency: Adjustable frequency of the AC square wave when welding on aluminum for optimized set up (15 Hz - 150Hz). • Wave Balance: Adjustable for optimized penetration or cleaning action when welding on aluminum. • HF Arc Start: Provides non-contact arc starting that eliminates tungsten or material contamination. • Lift TIG Start: Provides optimized TIG arc starting without the use of high frequency. • Pulse: Changes the weld current from high to low at a specified frequency, reduces heat input on thin material (0.5 Hz - 200 Hz). • Preflow & Postflow: Enables independent control over shielding gas before and after the weld. • Upslope / Downslope & Crater modes: Eliminates cracking at the end of the weld. • Hot Start: Ensures fusion at arc starts for both TIG and Stick processes. • Adjustable Arc Force & Hot Start Control for optimum Stick electrode performance. • Digital Meters: Voltage and Amperage; Preview and Hold Capability for easy set up • Trigger Control: 4T (Latch) eliminates operator fatigue • Comprehensive Setup Chart: Weld set up guide for optimum welding performance over a wide range of materials • Remote Receptacle: Enables connection of remote control devices like a foot pedal and torch slide control • Excellent Portability: Lightweight at 48.4 lbs • Overload Protection: Shuts down the power source to protect the internal electrical components from overheating