One of the cheapest of HF Thomann systems before I had a Samson Airline (purchased € 230) I broke in a year, it it has been 5 years since I have it and it still works like new. The only concern for me is that the Jack connector that plugs into the guitar is not bent, it ended up giving up the ghost this year, his replacement was not easy because I have never found MiniXLR cable jack-in-store, so I've removed the cap altogether and connect the cable directly to the son of the output of the guitar, it's not so bad.
In any case the price is largely the case!
I tried it with a bass, he cut some low frequencies, that is unfortunate. It's his weak point with the Mini-XLR cable found in stores. Otherwise he never answers and batteries will last a long time, a recharging system of reusable batteries is also integrated.