LSP 500 PRO a real game changer for public address. This system will liberate you. From hassle and hardwired cable. Up to 3 wireless microphone links, bluetooth music streaming, built in USB player/recorder guarantee optimum audio connectivity. Its dual batteries are hot-swappable even during live operation. LSP 500 PRO is stackable from 2 to 20 speakers to fit from small to large venues. Save time. Save money. Go PRO. Whether rental, corporate-use or conference hotel: Due to its flexibility and sophistication LSP 500 PRO fits a wide variety of applications. The system seamlessly integrates with different Sennheiser components, e.g. ew 500 microphones and receivers, providing state-of-the-art features like automatic frequency management and wireless synchronization. Connect all options setup and operation will be a breeze. From intro to outro...