The built quality of the mixer itself is quite nice and sound wise I haven't had any issues with it so far. One thing that can be a little annoying, if you don't know it, is that the Headphones Output is not separated from the Main output. So if your Master is turned down, you won't get any signal at the Headphones Output either. Can be handy in some cases, most of the times it's not.
The only thing that really needs to be improved though is the power brick. The power input on the mixer itself doesn't make an amazing impression to begin with, the power brick on the other hand straight up split in half after a few month of (not very extensive) use. Since this was just an issue of the housing, I taped it back together with some ducttape and it works fine ever since. So maybe do that before it can even split in half.
But apart from that minor issue I can definitely recommend this as a simple and (generally) sturdy mixer for a rather low price tag