We ordered a 5.1 system of Auna 8 months ago. In this system recently the two rear speakers do not work anymore. Actually, the speakers should be replaced or repaired within the warranty period we thought ... But the company Hifi-Tower, which sells the only company in Germany these devices, refuses to replace the speakers. She wants us to have it checked on site the unit from a dealer, and only when it has established that the defect from the beginning was, then Hifi-Tower would be willing to swap. When a trader opens the device, by the way will void the warranty of all alone, also require dealers for money, which makes no vain. To emails the company Electronic-star reacts only with standard-mails, does not go to the one what one puts forward, or what the lawyer, we have now contacted, counseled. A good piece of advice for those who consider buying at this company: In your own interest please HANDS OFF and prefer to pay a few euros more, but get perfect goods and services. IN NO EVENT OF ELECTRONIC STAR !!!!!!!!!!