The sound is coming from smaller speaker which cost 400$ which include internal Dac and amplifier.
All you have to do is to connect USB from your laptop.
It also has bluetooth connection
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STEREO SYSTEMWITHOUT THE NEED FOR A GIANTVANATOO SPEAKERS MAKE YOUR MUSIC BIGWITH MUSICFILL YOUR HOMESHOP NOWSHOP NOWAWARD WINNING SOUND, KILLER CONVENIENCETRANSPARENT ONE ENCORETRANSPARENT ZEROSHOP NOWCLEAR SOUND FOR DISCERNING EARSAND SHIMMERING HIGHSWITH FULL DEEP BASS, CLEAR ARTICULATE...
vanatoo.com
The larger one cost 600$.
This kind of speaker wil be good for young people.
Thomas