Public address and voice evacuation systems are essential for dealing with security and safety challenges. We rely on innovative products and solutions as a trusted advisor of the field of high-quality PA and voice-alarm systems. What we provide covers the most advanced systems in the field of IP technologies and digital public address devices, for large and complex facilities, to small and medium-sized analog music playback solutions, that are easy to use by the end-user. To be really effective, a public address and emergency sound system must deliver outstanding performance and high trustiness. We have provided systems and components for Sofia subway, industrial enterprises, public buildings, office buildings and etc.