Actually, the converter is a good solution: small, easy to connect, USB powered. But: It can only be converted to PCM signals, but not Dolby Digital. What does that mean? The sound of eg HD channels via cable is no longer just converted, but it plays only a strange popping noise. If that can not be adjusted on the TV (such as with some older Philips LED TVs), it's not just in the ARD or ZDF. Therefore, this converter is unwatchable, and I believe that the seller on this important fact in the product description could indicate quite. After all, there are many households in Germany, which are connected via cable, and an increasing number of stations will be broadcast in HD. In the supplied small Instructions incidentally then is even an indication. Therefore, the conclusion is: Useless, therefore return.