The VPS102A is a complete plug & play set, ready to start your party. The set contains a pair of 10" speakers, a passive and an active model. The active model houses the amplifier which has a built-in USB/SD player and Bluetooth wireless technology to stream your music wirelessly from your smartphone or tablet. Both speakers have a blue LED ring around the woofer to colourize and illuminate your party. The LED lights illuminate with 'sound to light' when sound signal is passed through the speakers, the drivers will light up. Completing the kit is a wired microphone for karaoke or presentation purposes..