2- Way active PA 15" speakerbox in a strong ABS case for stand-alone operation, featuring a powerful amplifier, controllable line-out, 2-Band tonecontrol, tophat etc. It incorporates a high effiency woofer and a quality compression driver to reproduce sound with excellent fidelity. The durable moulded enclosure is complemented with a tough metal grille that protects the woofer. If playing MP3 tracks is needed there's an USB port on the back. Perfect for mobile use.