DYNASOUND has pioneered the development of SOUNDMASKING since 1975. Our Network provides audio signal selection, volume control & frequency response to each individual speaker (not small clusters) without the need for plenum access or rewiring. DSN operates on standard networks and PoE to eliminate costly 120 Volt plenum power drops. DSN is Designed for Todays Requirements & Engineered for Tomorrows. Our Audio Security Solutions protect sensitive and classified (SCIF) conversations from human & electronic eavesdropping and signal recovery techniques. EXPERIRNCE THE DYNASOUND DIFFERENCE!