Ive had this machine for about a year.. It has fully adjustable pulse, ac freq , ac balance, and high frequency start..It hooks up to a 220v 50amp. I only ever used to tack up "art" or small welds. Comes with torch, foot pedal, bunch of cups, and gas lenses.. I believe it still has 4 years on the warranty. I want to sell it because I am in need of tool money to help build my welding truck. give me a call or text at 661-809-eight208 Location: bakersfield,ca