The PA speaker from the NV Active Series is one of the best in its price/quality class. In addition to the high power each of the loudspeakers has a built-in 4-channel DSP and EQ processor. The back panel features a USB input and an MP3 player. For wireless signal transmission, the speaker is equipped with Bluetooth technology. All these features and the high quality sound makes the Novox NV speaker the top of the low budget active speakers