AtlasIED Atmosphere AZA804 800W 4-Channel Power Amplifier

The AtlasIED Atmosphere AZA804 is a professional 800-watt, four-channel power amplifier designed for commercial audio installations requiring flexible speaker configurations, dependable amplification, and convenient system control.

Part of the AtlasIED Atmosphere audio ecosystem, the AZA804 delivers 200 watts per channel at 70.7V or 100V, providing a total rated output of 800 watts in constant-voltage operation. It also supports 4-ohm and 8-ohm speaker systems, making it suitable for a wide range of distributed audio and low-impedance applications.

Designed to integrate with AtlasIED Atmosphere AZM series processors, the AZA804 provides a practical amplification solution for restaurants, hotels, houses of worship, educational facilities, corporate offices, and other professional audio environments.

The amplifier includes four balanced analog audio inputs, a built-in web interface for configuration and monitoring, and optional Dante network audio connectivity using the separately available DPA-DAC4 accessory card.

With its compact 1RU rack-mount design, the AZA804 combines flexible power distribution and professional audio performance in a space-saving chassis.

Four Channels of Professional Audio Amplification

The AtlasIED AZA804 features four amplifier channels that can be configured to accommodate different speaker system requirements.

For commercial distributed audio installations, the amplifier delivers:

• 4 × 200W at 70.7V
• 4 × 200W at 100V

For low-impedance loudspeaker systems, the AZA804 provides:

• 4 × 150W at 8Ω
• 4 × 100W at 4Ω

The amplifier also supports mixed output configurations, allowing constant-voltage and low-impedance speaker systems to be accommodated within the same installation.

This flexibility makes the AZA804 useful for commercial facilities requiring different types of loudspeakers across multiple areas.

Flexible 70V, 100V, 4Ω and 8Ω Speaker Configurations

Unlike amplifiers limited to a single speaker output format, the AtlasIED Atmosphere AZA804 supports several common commercial audio configurations.

70.7V and 100V Distributed Audio

The AZA804 delivers up to 200 watts per channel when operating in either 70.7V or 100V mode.

These output configurations are suitable for commercial distributed speaker systems using compatible transformer-equipped loudspeakers.

Typical applications include background music, paging, and multi-area commercial sound installations.

4Ω and 8Ω Speaker Systems

The amplifier also supports conventional low-impedance loudspeakers.

With output ratings of 150 watts per channel at 8Ω and 100 watts per channel at 4Ω, the AZA804 can be incorporated into compatible professional speaker installations.

Mixed Speaker Configurations

The AZA804 supports mixed constant-voltage and low-impedance operation.

Supported configurations include:

• 2 × 200W at 70.7V plus 2 × 150W at 8Ω
• 2 × 200W at 100V plus 2 × 100W at 4Ω

This provides additional installation flexibility when different areas require different speaker types.

Designed for AtlasIED Atmosphere Systems

The AZA804 is designed to integrate with the AtlasIED Atmosphere ecosystem, including compatible AZM series audio processors.

Atmosphere systems provide flexible audio management for commercial installations requiring multiple audio sources and independently controlled areas.

When used with compatible Atmosphere processing equipment, the AZA804 supplies the amplification needed to drive connected speaker systems.

This makes it a practical choice for new Atmosphere installations and compatible system expansions.

Ready-to-Use 70V Operation

The AtlasIED AZA804 is configured for four-channel 70V operation out of the box.

This default configuration simplifies initial installation in applications using compatible 70.7V distributed speakers.

For systems requiring 100V, 4Ω, 8Ω, or mixed output configurations, the amplifier can be configured using its control interface.

Installers should verify the selected output settings and connected speaker loads before operating the system.

Web-Based Amplifier Configuration and Monitoring

The AZA804 features a built-in web-based control interface that allows installers to configure and monitor amplifier operation using a compatible web browser.

The interface provides access to amplifier settings, including supported output mode configuration.

Web-based management helps simplify commissioning and adjustment in commercial installations where equipment may be located in a dedicated rack room.

This functionality is particularly useful for systems with multiple amplifier channels or changing installation requirements.

Optional Dante Network Audio Connectivity

For installations using networked audio, the AZA804 supports optional Dante connectivity through the AtlasIED DPA-DAC4 accessory card.

The DPA-DAC4 provides four channels of Dante audio integration, allowing the amplifier to receive compatible digital audio signals over an Ethernet network.

Dante connectivity can be useful in larger commercial installations where audio sources and processing equipment are distributed throughout a facility.

The DPA-DAC4 is an optional accessory and is not included with the standard AZA804 amplifier.

Four Balanced Analog Audio Inputs

The AZA804 includes four balanced analog audio inputs for connecting compatible professional audio equipment.

Balanced connections are commonly used in commercial audio installations because they help reduce interference over appropriately installed signal cables.

These inputs allow the amplifier to work with compatible audio processors, mixers, and other line-level signal sources.

The amplifier's input sensitivity is rated at 750mV balanced, with a 40kΩ balanced input impedance.

BASH Amplifier Technology

The AtlasIED AZA804 uses a Class AB switching hybrid amplifier topology, identified as BASH technology.

This amplifier design combines Class AB amplification with a switching power supply approach.

The AZA804 provides a specified frequency response of 20Hz–20kHz with DSP filters set flat, along with a signal-to-noise ratio greater than 100dB below rated output, A-weighted.

These performance characteristics make the amplifier suitable for professional background music, paging, and installed sound applications.

Compact 1RU Rack-Mount Design

The AtlasIED Atmosphere AZA804 occupies only 1RU of rack space in a standard 19-inch equipment rack.

Its compact chassis is well suited for commercial audio installations where rack space is limited.

The amplifier supports automatic AC voltage selection between 110–120V and 220–240V at 50/60Hz, making it suitable for installations with compatible power service.

AtlasIED Atmosphere AZA804 Key Features

• Professional 800W four-channel power amplifier
• 4 × 200W at 70.7V
• 4 × 200W at 100V
• 4 × 150W at 8Ω
• 4 × 100W at 4Ω
• Supports mixed constant-voltage and low-impedance configurations
• Designed for AtlasIED Atmosphere AZM series processors
• Factory-configured for four-channel 70V operation
• Four balanced analog audio inputs
• Built-in web-based configuration and monitoring
• Optional four-channel Dante connectivity
• Compatible with the optional AtlasIED DPA-DAC4 Dante card
• BASH Class AB switching hybrid amplifier topology
• 20Hz–20kHz frequency response with DSP filters set flat
• Signal-to-noise ratio greater than 100dB below rated output
• Automatic AC voltage selection
• Compact 1RU rack-mount chassis
• Suitable for commercial background music, paging, and installed sound systems

AtlasIED Atmosphere AZA804 Technical Specifications

Amplifier Output Power

Output Configuration	Rated Power
70.7V Operation	4 × 200W
100V Operation	4 × 200W
8Ω Operation	4 × 150W
4Ω Operation	4 × 100W
Mixed 70.7V / 8Ω	2 × 200W at 70.7V + 2 × 150W at 8Ω
Mixed 100V / 4Ω	2 × 200W at 100V + 2 × 100W at 4Ω

General Specifications

Specification	Details
Manufacturer	AtlasIED
Product Series	Atmosphere
Model	AZA804
Product Type	Four-Channel Power Amplifier
Maximum Rated Total Output	800W at 70.7V or 100V
Number of Amplifier Channels	4
Amplifier Topology	Class AB Switching Hybrid – BASH
Analog Audio Inputs	4 Balanced Inputs
Input Sensitivity	750mV Balanced, 0dBu
Input Impedance	40kΩ Balanced
Maximum Input Signal, Inputs 1–4	+14dBu
Maximum Input Signal, Inputs 5–8 with Dante	+7dBu
Total Harmonic Distortion	1% at Rated Output
Frequency Response	20Hz–20kHz, DSP Filters Set Flat
Signal-to-Noise Ratio	>100dB Below Rated Output, A-Weighted
Crosstalk	73dB at 1kHz
AC Operating Voltage	110–120V / 220–240V, Automatic Switching
AC Frequency	50/60Hz
Rack Units	1RU
Height	1.75" (45mm)
Width	19" (483mm)
Depth	15.5" (394mm)
Weight	13 lbs (5.92kg)
Optional Network Audio	Dante via DPA-DAC4 Accessory Card

Typical Applications

Restaurants and Hospitality

The AZA804 provides flexible amplification for background music systems serving dining rooms, bars, lounges, and other commercial spaces.

Houses of Worship

Four-channel amplification and support for different speaker loads make the AZA804 useful for compatible worship audio installations.

Schools and Educational Facilities

The amplifier can power distributed speaker systems used for announcements, background audio, and other educational applications.

Corporate Offices

The AZA804 can support commercial audio systems in meeting spaces, reception areas, and other office environments.

Retail and Commercial Buildings

Support for 70V, 100V, and low-impedance speakers provides flexibility for installed audio systems serving different areas of a facility.

Why Buy the AtlasIED Atmosphere AZA804 from Audio Supply?

At Audio Supply, we specialize in professional amplifiers, audio processors, speakers, and commercial sound system equipment.

The AtlasIED Atmosphere AZA804 provides a flexible amplification solution for commercial installations requiring multiple speaker channels and compatibility with different speaker configurations.

Whether you're designing a new Atmosphere audio system or expanding an existing installation, Audio Supply can help you select compatible processors, speakers, and accessories.

Need a Compatible Atmosphere Audio Processor?

The AtlasIED Atmosphere AZA804 is designed to work with compatible AtlasIED Atmosphere AZM series processors.

Pairing the AZA804 with an appropriate Atmosphere processor provides a foundation for commercial audio systems requiring flexible source management, processing, and amplification.

Contact Audio Supply for assistance selecting the appropriate AtlasIED Atmosphere processor and related installation accessories.