As my field of work is location recording, the lighter the equipment the better. So I'm looking into available ways to use a smartphone using Android as an at least 2-channel recorder. Forget about the phone mic input. Even if it can be used on certain circumstances, it's quality is very poor. So you need some sort of interface, that can convert two XLR or more inputs into a micro-USB plug, and use some software on the phone to set levels and all. Has anyone tried this with good results?