The AtlasIED DMA401 is engineered for higher-power commercial installations requiring consistent performance, system scalability, and precise audio control.

Designed to operate as a traditional mixer amplifier directly from the factory, the DMA401 requires no mobile app for basic operation. Integrators can deploy it immediately using intuitive front-panel controls, ensuring fast, predictable installations.

When advanced configuration is required, the DMA Control App (iOS and Android) enables expanded setup via Bluetooth Low Energy, allowing multi-zone design, subwoofer integration, and expansion through the AtlasIED LMA Series.

AtlasIED DMA401 Key Features

• 400W Class D digital mixer amplifier

• Single-zone with Zone Link output

• Multi-impedance support:

  • 2Ω

  • 4Ω

  • 8Ω

  • 25V

  • 70.7V

  • 100V

• Factory presets for:

  • 1 zone

  • 2 zone

  • Zone expansion

  • Subwoofer applications

• Onboard DSP with AtlasIED loudspeaker presets

• DMA Control mobile app (iOS & Android)

• 4 inputs:

  • 2x Mic / Balanced Line / RCA

  • 1x Mic / Balanced Line / RCA / Optical

  • 1x Remote WTSD input

• Linkable with LMA Series amplifiers via proprietary Link Bus

• Push Here Diagnostic (PHD) speaker verification

• Priority Mute GPI

• 1W standby GPI

• Compatible with DMA-V and DMA-VS wall controllers

• Compatible with DMA-BT and DMA-ML WTSD inputs

• Compact 1RU half-rack chassis

• Rack kit included

• Convection cooled (fanless operation)

High-Power Performance & Scalability

Delivering 400 watts of output power, the DMA401 is built to drive complex loudspeaker systems, large distributed constant-voltage systems, and higher-SPL applications with confidence.

The proprietary Link Bus allows the DMA401 to manage audio routing and performance conditions across connected LMA Series amplifiers, simplifying system architecture and enabling flexible equipment placement.

A high-efficiency, global auto-sensing switch-mode power supply ensures stable performance under demanding load conditions while maintaining low energy consumption.

Smart Configuration & Control

Out of the box, the DMA401 functions as a traditional mixer amplifier.

With the DMA App, integrators can:

• Configure multi-zone layouts

• Add subwoofer systems

• Adjust DSP parameters

• Manage input routing

• Expand system power via linked amplifiers

This hybrid design supports both simple installs and scalable system growth.

Built-In Diagnostics

Push Here Diagnostic (PHD) enables rapid verification of speaker wiring and load integrity during commissioning, reducing installation time and improving system reliability before handoff.

Ideal Applications

• Restaurants & cafés

• Retail background and foreground music

• Presentation rooms

• Education facilities

• Large commercial distributed audio systems

• High-output reinforcement applications

Technical Specifications

General

• Type: Digital Mixer Amplifier, 1 Zone with Zone Link output

• Amplifier Topology: Class D

• Cooling: Convection cooled (fanless)

• Form Factor: 1RU, half-rack

• Rack Kit: Included

Output Power

• 400W @ 4Ω

• 400W @ 8Ω

• 400W @ 70.7V

• 400W @ 100V

• 350W @ 25V

• 350W @ 2Ω

Inputs

• 2x Mic / Balanced Line / RCA

• 1x Mic / Balanced Line / RCA / Optical

• 1x Remote WTSD input

• Rear panel attenuators

Control & Integration

• DMA Control App (iOS & Android)

• Bluetooth Low Energy connectivity

• Onboard DSP with speaker presets

• Priority Mute GPI

• 1W Standby GPI

• Compatible with DMA-V and DMA-VS wall controllers

• Compatible with DMA-BT and DMA-ML WTSD inputs

• Zone Link output for LMA Series expansion