This little speaker packs a large (and surprisingly good) sound. Bought specifically for my old iPhone 4, which I am retiring and putting out to pasture as an iPod, it has more then enough oomph to fill a largish sized room, and was even powerful enough to cater for an outside party (as long as you didn't stray too far from the terrace). You have to make sure you get a good connection with the iPhone socket, but it also came with a number of adaptors for other models (I haven't tried those because I have no need). Basically, you take it out of the box, plug it into the mains and away you go. Great buy, very happy with it and very happy to recommend to others.