The PreSonus AudioBox iTwo is a portable, bus-powered USB interface with two inputs and musicians in mind. Front panel combo jacks let you plug in mics, line sources, and direct instruments to easily lay down demos and song ideas. A handy front-panel mix control lets you choose to hear what you're recording free of latency, blended in with playback from your DAW -- it even comes with a free copy of PreSonus Studio One recording and mixing software to get you up and running right out of the box.