I opted for this device because the option on High Res shots a must for me and also this "thing - Da - Kit" was not necessary. Three reasons for a super review i) feel very good, so does a more than stable impression, except the Palstik _ volume control. Also in the operating instructions described exactly how the battery has to be replaced, which of course has a long service to the goal (for me an absolute quality criterion), because the battery is in many "such" devices the crux. The included rubber bands (to the music source "darnzupappen") are quite firm, which is something friemelg or evokes a certain "sense of security". I use them only that the store no scratches occur, because I have made myself the 'Schneider of my confidence, "a leather sleeve for 15 (with the necessary openings for cable). ii) I have heard four headphones to test a difference in sound. Two Sennheiser were (Over Ears HD 600, Urbanite XL) and In Ears Ultimate Ears and far too expensive Bose, with active Geräuchsunterdrückung. First, I have tried them all and quickly umgestöpzelt to hear a difference. OK good, but I expected more. Then I walk on a longer heard an album that I just by my mobile device (ie not by the home system on CD) very well knew her and thought: My God what's that? I have heard things that were not there before. The sound is much more direct. If you have been listening to and knows the music well, you can see a big difference without the slightest doubt. This applies in particular (after further hearing) for two Sennheiser headphones, because the are not in ear and therefore [the extent necessary in headphones is possible] convey more space. So again a clear plus. iii) The power also enables higher-impedance (eg my 600 with 300 Ohm) to operate Sennheiser HD headphones, but this will probably be in all mobile Kopfhöerverstärker so. There is also music that ever like to listen to loud. This is very possible with this (and probably others) and makes more than fun. Wenns interested, I hear the most varied music of Kraftwerk (We are the Roborter [2009 Remix] bangs so so), jazz (Wilson, Krall Dave Brubeck, Davis, Coltrane ...), Punk (Ramones, Sex Pistols, Stiff Little Fingers, Dead Kennedys ...), Classic Soul (70 or Neo Soul, Friend 'n Fellow, India Arie, Erykah Badu), Alternatives and also good pop (Bowie, Pink Floyd [if perceived as Pop], ... Charts no pabulum which Dislikes 99.99%). Criticism and why the fifth star is missing: Clearly and briefly the price, but I knew that beforehand and also caused gnashing of teeth. But I also do not know if I would be satisfied with other solutions, which is why the gnashing of teeth disappears more and more (if it lasts a long time, it will also disappear entirely), and the joy from the start has weighed on.