Now that your mobile phone is likely to also be your portable music player, it’s time to pick up a speaker system to get the most out of your tunes.

We test-drove the Altec Lansing inMotion iM4 speakers -- a teeny portable solution at just 10.25 inches wide by 5.3 inches deep and an inch high (and weighing just 28 ounces) -- and found that they provided a clean, full sound out of the four neodymium 25mm Micro Drivers and MaxxBass technology for impressive bass without a subwoofer.

The retractable cable makes it a breeze to plug into any standard 3.5mm audio jack from a phone or MP3 player (a 2.5mm adapter is also included for other models). We tried it with a BlackBerry Curve and Apple iPhone.

Other features of this foldable speaker solution include dual inputs to connect two phones or MP3 players at once, optional AA battery power with 18-hour playback, and a rubberized base to ensure your phone or player won’t slip ‘n slide.