Akai Akai i.Sound for PlayStation Portable Recommendations

Pump up the volume! i.Sound provides high-quality audio in a unique, portable design. Features extendable left and right channel speakers, foldable casing, four full range high efficiency drivers, surround sound effect button, and bass booster button to enhance the bass by 2dBs. Fully compatible with iPod, MP3, laptops, PSP, CD players, and any other audio device with a mini-jack audio output.