The LDA ONE500 is a compact EN 54-16 certified public address and voice alarm system that ensures a fast, safe and controlled emergency evacuation. ONE is the most versatile and cost effective PA/VA system, thanks to its cutting-edge features, excellent audio quality and flexibility in minimum space. It has 2class D amplifiers, 6 zones, 3 audio inputs, 6x6 audiomatrix, DSP and LCD display. The system can be configurated without software or PC, thanks to the Plug&Set mode for PA/VA. Audio inputs and automatic mixing allow high versatility for PA use in small installations. ONE has an EN 54-4 battery charger and can operate with one 12V battery. This feature and its advanced power saving control reduce mainteinance costs to the maximum. A Wall&Rack innovative design makes ONE suitable for wall mounting and rack integration.