The Atmosphere AZM4 is a 4-zone audio processor and the heart of an Atmosphere audio control system. Powerful DSP combined with innovative algorithms offer custom solutions for a wide variety of spaces. A built-in message player, virtual wall controllers, learning ambient noise sensing, Tilter Filter™, auto-gain, GPIO, bell scheduler, room combine, and many more features, make the AZM a processing powerhouse for automated audio system control.