It is a sound bar for your Apple device. Inside the aluminum created tube is a covert subwoofer to enhance the 2 all-range speakers for mid-low frequency.
High Performance built-in Class D Amplifier ( 2Wx2+ 2.5W mid-bass)
Support Apple iPod/iPhone/iPad devices
Supports PC USB , Analog Audio 2 channel Line-in
AV out, L/R audio + composite video out (L/R audio is for external active sub-woofer)
5 Band EQ mode controlled remotely