Go for GuitarPort from Line6, it is the same as Ampfarm, but Ampfarm is only for Digitechs systems. But Line 6 has made Guitarport for the more mortal PC, and comes with an AD/DA converter to your USB port so your computer don´t lack and I have to emphesize this. IT SOUNDS F@£$ING GREAT. I would pick it over Amplitube any day.