I bought this to plug into my laptop to raise the sound level, it's probably more designed for mp3's though as the sound is quite distorted if you turn it up past half way. Also it's blind boxed so the funny face on the speaker may not be the one you choose so be aware of that. Otherwise it's a nice little unit that is easy to use, easy to charge with USB and doesn't require any power, you just plug it in and away it goes.