It's been a year now that I use, no malfunction is not very powerful but small enough evenings, I do not know the exact power but it must be around 150W RMS no more. The sound is not too bad but far from excellent, too, the biggest problems with these types of speakers (I do not hide it, it kind of boost and company) is that each evening you say that you can let go at any time, it was never clear conscience stroke such material. That was my first speaker sound system. The value for money ... bin is € 100 for an enclosure, we can say that is good value for money, I would say that if you want to use them as speakers for living room or in a room, the ratio q / p is very good lol. With the experience I would expect to have a little more money to take me more material wharfedale correct style, I intend to change soon also pregnant. I put 6 / 10 because for low-end hardware like that, taking into account the parameters when you do not ask them too, they do their job.