As the sound on my TV is rather tinny I had been a similar system of Vivanco (cost about 30) and this kept me many years of good service. Just before Christmas we went unfortunately broken. So I ordered og system due to the great look. I thought to myself, if I even spend twice this time, then I'll be back satisfied. Thanks to Prime it was as promised on 24.12. delivered. Did it immediately unpacked and connected. The optics is (are the 2 small loudspeakers not lit up with me !?) really super. But the sound was not convincing. Within 2 hours, the sound deteriorated somehow. I then checked all the cables. And I found that the cable at the battery plug must have a break anyway. So I have everything packed up again and send it immediately after Christmas back. But even without this defect I had the system probably sent back, because for me the price / performance ratio is not right.
Update as of 29.12.2014
Since my TV was already 6 years I thought to myself, "I'm not stupid" and buy myself a great new TV and make sure that the sound me so confident that no further additional boxes are needed. Although nowadays all sellers are claiming that the current television always have a modest sound ... I've found a TV that has spectacular 40 watts of music power. Am now totally happy for my needs and the sound is really great.