Unlike some recent comments, the installation is very simple / fast PC and MAC (small problem on the iPhone app if you have a newer version of iOS). The sound quality is excellent and of great purity, beware now of the quality of your mp3 for all defects production / recording are revealed. Therefore prefer quality labels or remastered versions. As for the volume, I did not dare push the volume to the max to preserve my neighborly relations but the enclosure cover very satisfactorily about 60 m² to 50% by volume.