Although the device several positive properties (easy setup, ease of operation, performance), I can not recommend it, because it crashes repeatedly: Usually then only helps the separation of the mains voltage; often "greeted" me the repeater but also by pointing out that he has automatically set back to factory settings and want to reconfigure. While this is not a big hassle if you have saved the settings (but always with a password, otherwise it'll work not with restoring) but it sucks without end.
Another gripe is the built-in FM transmitter, which just has a sufficient width of 1 m line of sight.
Since Amazon offers no support other than an exchange, I turned to AVM, who exchanged my device without difficulty (for this, there's the Lone Star) but the replacement device shows the same flaws.