I'm completely new to the music production field and this is my first mixer ever - just for some context.
That being said, it's been working great for what I do. I have the Korg Volca series that I've been messing around on to get myself started in this adventure, and the mixer does exactly what I needed it to do - sends them all to my monitors. The added effects are a plus - definitely appreciated and give the Volca's much more life. I do wish that each channel could have a different FX setting, but for the price, I think it's great that it comes with any FX at all. (You can set the FX level separately for each channel, just can't have different FX going on different channels - each active channel gets the effect you've selected)
Other than that, I use it to feed my iPod and phone through to listen to music with my monitors, and that works great too. (with a 3.5mm to dual 1/4" adapter - or you can use a 3.5mm to RCA adapter) Only thing that could make it better would be if the stereo channels or the CD IN had EQ settings like the 2 mono channels.
There's absolutely nothing to gripe about here, though - it's an excellent mixer at least for what I do, and I dig it. Great buy; no regrets.