The RV-NB70's large cylindrical design houses a woofer at each end. This boombox is equipped with bass enhancement circuitry, which helps to ensure a heavy, clean low frequency. New for 2011 is an iPod/iPhone dock. This dock is protected behind a sealing door to prevent damage from the elements. Another new feature for 2011 is the guitar/microphone input. This input can be mixed, so that your performance comes out the way you want it to. The RV-NB70's USB Host allows playback of MP3/WMA music stored on USB mass storage devices. There is also a CD player that can handle MP3/WMA file playback. This boombox can run on batteries (in addition to AC), and has a shoulder strap, making it portable. The JVC RV-NB70 Kaboom boombox comes with an FM tuner.