For the price I expected much. It should just be a player, including USB flash drive and memory card at random (shuffle) function. It was clear that this little device can not produce thumping bass. But the clear, prominent surround sound convinced repeatedly. Trouble's at best with songs, the experiment itself very much with surround sound, but these are fortunately very few. The small player has also become a constant companion, thanks to the rich battery pack, the supplied remote control is a blessing. The build quality is excellent by the way for this price range.