I had an MP3 / MP4 player wanted, Bluetooth, WIFI support, an FM radio and has a memory expansion allows. All these criteria are met, this Samsung device. The hearing test I'm a Bose 5.1 system or on Bose SoundLink Mini and Bose SoundLink III operated which I call all my own. Sound is always subjective, what one likes falls in others by below. For my taste'm very satisfied and can only recommend this player.