I have one and I believe it only has Linear discharge, but it can discharger a pack at 40 amps though. It has 6 fans to keep it cool, and I only really notice them come on when it is discharging. I don't really use mine that much anymore, and I was considering selling it if you are interested. PM me if you are. This is probably the most powerful unit out there for its size. I would say its about 40% the size of a CE GFX.
PS there is at least two threads on this product but they really aren't very active anymore.