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 . Highlights * Plays mono and stereo uncompressed WAV (44.1/48kHz) and MP3 files * Utilizes robust, industry-standard SD and SDHC card formats * Easy-to-operate tape-recorder type control panel * Balanced (Phoenix-type) and unbalanced audio outputs * Front-panel headphone output with level control * Random, Repeat One, Repeat All modes * Program playlists via .m3u files * External RS-232c and GPIO control * Securable SD slot * Bright, easy-to-read OLED display * Simple, intuitive operation