I got a small mixer partly so that I can play my guitar through an amp modeler on my computer. I like the mixer so far and was able to get a few amp sounds that I like better than what I can get on iOS, but there are issues with it working at the low latency I need it to work at (hence the pops in this recording).

I had to do a lot of poking around just to get sound going. So, I see why so many people prefer traditional hardware devices to software.