This box is pretty much exactly what I ordered, what comes to sound and features.
Unfortunately, there was a battery problem pretty soon. The amp worked just OK using the power supply, but the battery wouldn't charge anymore. No charging light was lit, no charging happened. So - a battery or charging issue.
I sent it back, and the communication from Thomann was (before they even had a look at the product) that if it's a consumable (?) component, or if the issue is about deep discharge of the battery, they will not repair it under warranty. This was after only months after I got the amp, and I did tell them that whatever it is - it's for sure under warranty. They repeated the statement about "deep discharge" not being under warranty.
At the end, things turned out good. They sent me a new amp and it works fine. However, this mail exchange about possible "deep discharge" not being under warranty left me with a bit of a sour taste. I asked what was wrong with the original amp, but apparently the Nux manufacturer doesn't reveal details - so I didn't get any details, either. ;)
About the product: it's really great! Has exactly the stuff we need for a singer and an acoustic guitar, no more, no less. The sound quality is great, the volume is just sufficient for your small/medium gigs.