I bought this both to be able to practice without my brother getting angry and to play live performances. It works well! Only the volume knob seems to be linear, which means it doesn't really affect the volume until you turn it all the way down, after which it changes really fast (like the volume slider in youtube). But if you have some other way to amplify the sound, it is absoulutely ok!
For me, the headphone output is too quiet too, but again, I always have another way to amplify it, so it really isn't a big deal. And it will probably be loud enough for other people.
So I do really reccomend this violin to anyone on a budget!