The DN-F400 builds upon the professional quality and innovation that has long made Denon Professional the undisputed leader in innovative audio design. Delivering powerful performance in a compact, single RU half-space package, the DN-F400 is designed to deliver dependability in critical applications where audio runs continuously or must be triggered at a moment’s notice using the RC-F400S remote controller (sold separately). Applications including background music, music-on-hold, continuous or repetitive messaging, emergency announcements, and sound fx playback for sporting events and theater will benefit from the high-quality and reliability of the Denon Professional brand name.