400W Digital Mixer Amplifier

The AtlasIED DMA401 is engineered for higher-power installations that demand consistent performance, system expandability, and precise audio control. Ideal for large commercial spaces, distributed constant-voltage systems, and high-output applications, the DMA401 maintains the DMA Series design philosophy of immediate usability, operating as a traditional mixer amplifier directly from the factory.

Delivering 400 watts of output power, the DMA401 supports a wide range of speaker loads and is designed to drive complex loudspeaker systems with confidence. Advanced configuration through the DMA App enables integrators to design multi-zone layouts, incorporate subwoofer systems, and link additional amplification via the AtlasIED LMA Series. The proprietary Link Bus allows the DMA401 to manage audio routing and performance conditions across connected amplifiers, simplifying system architecture.

A high-efficiency switch-mode power supply and robust output stage ensure stable operation under demanding conditions while maintaining low power consumption. The DMA401 is housed in a compact 1 RU half-rack chassis with included mounting hardware and features tools such as Push Here Diagnostic (PHD) to verify speaker wiring and load integrity during commissioning. The result is a high-power mixer amplifier that integrates cleanly, scales easily, and supports predictable, repeatable installations.