It's literally 30 Euro with an included PSU. You can't really go much cheaper than that. And for the price, it does its job. It is small (similar size to Katana Mini, a little bit larger) and plastic, so it sounds sort of boxy, the quality isn't the greatest, but you can still get nice tones out of it if you play around a little. But let's be honest, nobody buys an amp like this and expects a top-notch sound quality.
Both clean and overdrive channels work well. Build quality looks pretty good, the plastic is solid (oddly battery cover seems to be made of different plastic to the rest of the casing but it's okay quality-wise too) and the speaker mesh is metal. It does buzz on PSU power, but not as much as I feared it would and the buzzing is barely noticeable when you have fingers on the strings. A clip-on grounding cable would probably do the job too.
I bought it along studio monitors to have a small, handy mini-amp for whenever I want to go somewhere else to play or whenever I'm too bothered to actually plug into my virtual amp setup but still want to practice. And for that, it does its job perfectly well. It fits in a regular backpack easily, and you'll still have plenty of space.
