I am by profession toning. in the public service and only some music with wanted to take in the hotel room. There, the SoundLink developed with his sound into a mega-fetuses-conditioning, absolute madness. What you need actually still large stereo systems, with this part and a Bluetooth mobile phone to sonication loose all rooms to 25 square meters. The bass is in its strength and the frequency range is not physically erkärbar, the battery lasts the whole evening and the connection to the mobile phone, etc. is extremely stable. So if you want to have trouble with your neighbors: This device is suitable for it. Full marks .... because I'm not going to excite many times!