[Clearly & Powerful Sound]: Soulion sound bar is driven by the exclusive booster technology and with 2 full-range speakers, to make the sound be more stunning, crisp and mesmerizing even at low volumes. [Easy Control & Connect]: Just plug in the USB port for power and 3.5mm jack for sound. Rotate the knob for volume to start the oomph. A small switch button to turn ON/OFF the LED lights power.