Recommend a compatible audio interface (2 in 4 out)

I am afraid I will never get the recording process beyond microphones and guitar inputs. While my Cubase setup has some great potential right out of my basement studio AND I WISH I knew what to do with it but it just seems to be one hell of a mental block.

So, would I be able to get an audio interface plugged into the iPad 4th gen and use it for portable recording?