AtlasIED DPA404 400W Networkable 4-Channel Power Amplifier with Optional Dante Network Audio

The AtlasIED DPA404 is a versatile DSP-controlled four-channel amplifier that offers unmatched flexibility for a wide range of commercial audio applications. Designed with both traditional and networked configurations in mind, the DPA404 can be used right out of the box as a 70.7V commercial amplifier or easily reconfigured to handle 4Ω or 8Ω low impedance systems. Its hybrid design supports mixed-use environments, allowing two channels to operate as high-impedance 70.7V/100V outputs while the remaining two serve low-impedance foreground zones.

Equipped with onboard DSP, the DPA404 includes EQ, limiting, delay, and filtering on every channel, all configurable through a browser-based GUI. The system supports expansion up to eight inputs using optional Dante™ or analog mixer cards, making it highly adaptable for paging, background music, or zone amplification. Integration is further enhanced with mute assignments, contact closure activation, remote level controls, and compatibility with PC, iOS®, and Android® devices for full network-based control and monitoring.

Key Features

• 70.7V, 100V, 8Ω, or 4Ω Functionality
• Configurable DSP with GUI Interface
• PC-Based Site Manager Software with Auto-Discovery
• Fault Reporting, Input/Output Status & Remote Activation
• Assignable Mute via Audio Signal or Contact Closure
• Four Balanced Line Inputs, Expandable to Eight
• Accessory Card Slot for Dante™ or Analog Mixer Input Card
• Four GPIO Ports Assignable for Mute or Remote Volume
• Compatible with PC, iOS®, and Android® Platforms

Technical Specifications

• Power Output: 4 x 100-Watts @ 70.7V / 100V
• Power Output: 4 x 75-Watts @ 8Ω; 4 x 50-Watts @ 4Ω
• Power Output (Hybrid): 2 x 100-Watts @ 70.7V, 2 x 75-Watts @ 8Ω
• Power Output (Hybrid): 2 x 100-Watts @ 100V, 2 x 50-Watts @ 4Ω
• Amplifier Topology: Class AB Switching Hybrid - BASH
• Input Sensitivity: 750mV Balanced, 0dBU
• Input Impedance: 40k Balanced
• Maximum Input Signal: +14dBU (Inputs 1-4), +7dBU (Inputs 5-8 via Dante™)
• Frequency Response: 20Hz – 20kHz (DSP Filters Set to Flat)
• THD: 1% @ Rated Output
• Signal to Noise Ratio: >100dB (A-Weighted)
• Crosstalk: 73dB @ 1kHz
• Voltage: 110V – 120V & 220V – 240V Auto Switch, 50/60Hz
• Rack Units: 1 RU
• Warranty: 36 Months from Date of Purchase

What’s in the box

• DPA404 Amplifier Unit
• User Documentation