AtlasIED HPA2604 4-Channel 650W Power Amplifier – 70V/100V

The AtlasIED HPA2604 is a high-performance, four-channel professional power amplifier designed for commercial distributed audio systems and demanding sound reinforcement applications. Delivering 650 watts per channel, the HPA2604 provides a total rated output of 2,600 watts across four independent channels, supporting 70.7V, 100V, 4-ohm, and 8-ohm speaker systems.

Engineered for installations requiring multiple high-power amplifier channels, the HPA2604 is an excellent solution for large commercial paging systems, background music distribution, auditoriums, conference centers, educational facilities, and professional sound reinforcement.

Featuring Generation II Class I output technology, the amplifier combines the audio performance associated with Class AB amplification with efficiency approaching Class D designs. Its advanced thermal management system, universal auto-sensing power supply, and energy-efficient standby operation help provide dependable performance in professional installations.

The HPA2604 also includes balanced audio inputs, front-panel detented level controls with a security cover, remote turn-on capability, fault reporting, and an accessory card slot for optional Dante digital audio connectivity.

Four Independent Channels with 650 Watts Each

The AtlasIED HPA2604 provides four amplifier channels, each rated at 650 watts across its supported output configurations.

Power output ratings include:

• 70.7V distributed audio: 4 × 650 watts
• 100V distributed audio: 4 × 650 watts
• 8-ohm speaker loads: 4 × 650 watts
• 4-ohm speaker loads: 4 × 650 watts

With four channels available in a single chassis, the HPA2604 allows installers to power multiple speaker circuits without requiring several separate amplifiers.

This configuration is particularly useful in commercial facilities where different speaker groups or audio distribution areas require dedicated amplifier channels.

Each channel can be assigned to an appropriately designed speaker load, providing flexibility for professional audio system design.

Important: The HPA2604 is not specified for 2-ohm operation or bridged output configurations.

Flexible 70V/100V Distributed Audio Amplification

The HPA2604 supports both 70.7V and 100V constant-voltage speaker systems, making it suitable for a wide range of commercial distributed audio installations.

Constant-voltage audio systems are commonly used in facilities where multiple speakers are connected across extended cable runs.

The HPA2604's four-channel design allows system integrators to distribute amplifier power across separate speaker circuits while maintaining centralized equipment installation.

Typical applications include:

• Commercial paging networks
• Background music distribution
• Large educational facilities
• Conference centers
• Retail and hospitality installations
• Industrial and institutional audio systems

With 650 watts available per channel, the HPA2604 provides substantial power for properly designed distributed speaker systems.

Generation II Class I Amplifier Technology

The AtlasIED HPA2604 incorporates Generation II Class I output topology, designed to deliver efficient power amplification with high-quality audio reproduction.

This technology combines the sound characteristics associated with traditional Class AB amplification with efficiency approaching Class D designs.

The amplifier provides a specified 20 Hz–20 kHz frequency response and less than 0.15% total harmonic distortion, supporting clear reproduction of music and speech.

Its high-efficiency architecture is especially beneficial in commercial installations where amplifiers may operate for extended periods.

Professional Audio Inputs and System Controls

The HPA2604 includes installation-friendly features designed for professional audio integration.

Balanced Audio Inputs

Balanced input connections help minimize unwanted noise and interference, particularly in installations involving longer audio cable runs.

Front-Panel Detented Level Controls

Individual level controls allow installers to adjust amplifier output during system setup.

A security cover helps protect established settings from accidental or unauthorized changes.

Remote Turn-On Capability

Remote turn-on functionality supports integration with compatible centralized equipment control systems.

Fault Reporting

Built-in fault reporting provides status information that can assist with system monitoring and troubleshooting.

These features help simplify operation in commercial installations where reliable performance and controlled system access are important.

Optional Dante Digital Audio Connectivity

The AtlasIED HPA2604 includes a rear-panel accessory card slot for an optional Dante digital audio interface.

With a compatible accessory card installed, the amplifier can be integrated into supported networked audio systems.

Dante technology enables compatible professional audio equipment to exchange digital audio over Ethernet networks, providing additional flexibility for larger installations.

This capability can be useful in commercial facilities where audio signals must be distributed between multiple equipment locations.

Note: Dante connectivity requires a separately purchased compatible accessory card and is not included as a standard feature.

Efficient Power Supply and Thermal Management

The HPA2604 features a universal auto-sensing power supply designed for 100–240V AC mains operation.

This switch-mode power supply helps maintain reliable amplifier operation under varying electrical supply conditions.

The amplifier also incorporates a low-resistance, direct-coupled thermal transfer design to help manage operating temperatures.

A variable-speed cooling fan provides additional thermal management during high-output operation.

With approximately 1 watt of standby power consumption, the HPA2604 supports energy-efficient operation when the amplifier is not actively in use.

Compact 2RU Rackmount Design

Despite providing four high-power amplifier channels, the AtlasIED HPA2604 occupies only 2 rack units.

Its dimensions are:

• Height: 3.5 inches
• Width: 19 inches
• Depth: 15 inches

Weighing approximately 22 pounds, the HPA2604 offers a relatively compact and lightweight solution for professional equipment racks.

This design helps conserve valuable rack space in installations requiring multiple amplifier channels.

AtlasIED HPA2604 Key Features

• Four-channel professional power amplifier
• 650 watts per channel
• 2,600 watts total rated channel output
• Supports 70.7V and 100V distributed audio systems
• Compatible with 4-ohm and 8-ohm speaker loads
• Generation II Class I output topology
• 20 Hz–20 kHz frequency response
• Less than 0.15% total harmonic distortion
• Balanced audio inputs for professional installations
• Detented front-panel level controls with security cover
• Remote turn-on capability
• Built-in fault reporting
• Rear-panel accessory slot for optional Dante connectivity
• Universal 100–240V AC auto-sensing power supply
• Advanced direct-coupled thermal management
• Variable-speed cooling fan
• Approximately 1W standby power consumption
• Compact 2RU rackmount chassis
• Lightweight 22 lb construction
• Black professional equipment finish

AtlasIED HPA2604 Technical Specifications

AtlasIED HPA2604 Technical Specifications

Specification	Details
Manufacturer	AtlasIED
Model	HPA2604
Product Type	Four-Channel High-Power Amplifier
70.7V Power Output	4 × 650W
100V Power Output	4 × 650W
8Ω Power Output	4 × 650W
4Ω Power Output	4 × 650W
2Ω Operation	N/A
8Ω Bridged Operation	N/A
1Ω RMS Power Output	N/A
Frequency Response	20Hz–20kHz
Total Harmonic Distortion	<0.15%
Channels	Four
Signal-to-Noise Ratio	>70dB
Connector Type	Terminal Block & Phoenix
Cooling	1 Variable-Speed Fan
BTU, All Channels Driven AES	2,132.5 BTU (70.7V, 120VAC)
Maximum Current, All Channels Driven Continuous	26.9A
Rack Units	2RU
Height	3.5" (89mm)
Width	19" (483mm)
Depth	15" (381mm)
Voltage Compatibility	Universal
Weight	22 lbs (10kg)
Finish	Black
Manufacturer Warranty	36 Months (3 Years) from Date of Purchase

Recommended Applications

Commercial Paging Systems: Provides four high-power channels for large 70.7V or 100V distributed speaker networks.

Background Music Distribution: Supports separate speaker circuits in retail facilities, hotels, restaurants, and commercial buildings.

Educational Facilities: Provides amplification for schools, universities, gymnasiums, and institutional audio installations.

Conference Centers: Delivers flexible amplification for professional audio systems serving multiple meeting areas.

Auditoriums and Performance Spaces: Supports compatible loudspeaker systems requiring multiple high-power amplifier channels.

Houses of Worship: Provides amplification for speech and music systems requiring multiple speaker circuits.

Large Commercial Installations: Offers centralized amplification for multiple audio distribution areas.

Need a Two-Channel Commercial Amplifier?

For installations that don't require four independent amplifier channels, consider the AtlasIED HPA1302 2-Channel Power Amplifier.

The HPA1302 delivers 650 watts per channel and supports 70.7V, 100V, 4-ohm, and 8-ohm operation. It offers a practical alternative for smaller distributed audio systems and commercial installations requiring fewer amplifier channels.

Explore the AtlasIED HPA1302 2-Channel Power Amplifier for a two-channel solution with flexible output configurations.

Why Buy the AtlasIED HPA2604 from Audio Supply?

At Audio Supply, we specialize in professional audio equipment for commercial and institutional installations. The AtlasIED HPA2604 delivers four channels of efficient, high-power amplification with flexible 70V/100V and low-impedance operation, making it a versatile solution for demanding distributed audio systems.