If all of your mp3 music is compressed below 192kbps and its got a bit of bass in it dont buy this item. If however you recode all your own music and its 256 or above you will not find a better system for your Ipod.
The reason is the bass. When the music is very compressed it becomes (the bass) muffled and 'thuddy'. as a result you can't play it at moderate to high volumes incase the neighbours kick off!! This applies to everything from Paulo Nutini to the Happy Mondays.
But.... if your music is 256kbps or above the detail, crispness and seperation for such a small system is phenomenal. and it can handle music Ranging from Elgar to the Eagles.