Hi Guys

I don't truly understand what the difference is regarding amperage adjustment on both sides of electrode positive and negative allows me to do differently. Can someone tell me what an Aerowave machine will truly allow me to do that a Dynasty won't? I mainly use it on Aluminium casting repairs and fabrication. I would really like some good imput and have searched the archives and can't tell how twice the price will help me.

Thanks,

Garrity