This audio interface / mini mixer taught me pretty much everything about mixing. Made me not afraid of clipping, realised clipping is where all the best sounds are. At first, a lot of the built in effects are not good in their digital form but just spend a little bit more time going through and experimenting, you can make your guitar directly injected into it sound like nothing before and you can really go crazy with the mastering and mastering effects because you almost don't have any inhibition on what to do while you do on a DAW. Yes it can be tedious and annoying but it still gets 5 stars.
OK in short. Start with the phantom power issues it's a little annoying but it takes less than 10 seconds to restart and up until this point I've never lost any work its never posed a problem in any sort of way that would effect anything other than mild frustration. Loads of effects by no means as good quality or with the wide array tweaking options if you bought the FX pedals instead. But gives you a good idea of where to start with the necessary equipment when you get to the final draft and record or play live. Very clear sound and when you use the bulit in mics they do an amazing job of recording a room full of instruments, obviously it sounds rough but it's clear enough to pick out each instrument and really good for recording band practices. When recording a track at a time or recording say a rhythm guitar and vocal track simultaneously there are some times volume issues with one drowning out the other especially with the more distorted or heavier effects. This is my first and only digital recorder so have nothing to compare it to but overall really easy to use and with many other options and things to experiment with. Its really good for getting down ideas and its good for creating more ideas on top of that. Things you may not have thought of. I could go on but am not going to, i said in short, any questions feel free to ask.