I will let you know soon.
I purchased a "WSE200"
which would not form a puddle in 1/8" mild steel.
Barely made it red hot, but arc was beautiful and easily started!
Potentially a bad board? Bad amp pot? Don't know,
I sent it back and am waiting for the replacement
"WSE250" to arrive.
I will send an update.
I would have liked to buy a Miller or Lincoln,
But I don't have thousands of dollars to spend on a welder. I've had MIG and oxy-acetylene set-ups.
I was really hoping for an affordable TIG!!