HA5004SD 3600W 4-Channel Class D DSP Power Amplifier for Professional PA Systems
Product Overview
The Haozhiseng Audio HA5004SD is a professional 1U 4-channel Class D DSP power amplifier designed for live sound, touring systems, fixed installations, rental sound systems, houses of worship, theaters, clubs, and professional PA applications.
Delivering 4 × 500W at 8Ω and 4 × 900W at 4Ω, the HA5004SD provides powerful and stable output for full-range speakers, top speakers, monitor systems, and multi-zone audio setups. Its high-efficiency Class D amplifier platform reduces heat, weight, and rack space while maintaining reliable performance in demanding professional environments.
With a built-in 4-input / 4-output digital DSP processor, the HA5004SD offers crossover, parametric EQ, limiter, delay, and preset storage functions, helping users optimize speaker performance without the need for an external loudspeaker processor. The amplifier can be controlled through USB and RS-485 communication, making system setup and tuning more flexible and efficient.
Built with a compact 1U rackmount chassis, effective fan cooling, and complete protection circuits, the HA5004SD is a reliable solution for professional audio users who need powerful output, DSP control, easy installation, and long-term stable operation.
Key Features
4-Channel Professional Power Amplifier
Provides four independent output channels for flexible PA system configuration.
3600W High Power Output
Delivers 4 × 500W at 8Ω and 4 × 900W at 4Ω, suitable for professional full-range loudspeakers and top speaker systems.
Built-In DSP Processing
Integrated DSP includes crossover, EQ, limiter, delay, and preset functions for accurate speaker tuning and system protection.
1U Compact Rack Design
Slim 1U chassis saves rack space and reduces system weight, ideal for touring racks, rental systems, and fixed installations.
USB and RS-485 Control
Supports PC software control via USB and RS-485 for convenient setup, tuning, and preset management.
Efficient Class D Amplification
High-efficiency Class D design provides strong power output with lower heat generation and improved energy efficiency.
Reliable Cooling System
Built-in fan cooling helps maintain stable operating temperature during long-term high-power use.
Complete Protection Functions
Includes short circuit protection, DC protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection.
Typical Applications
Live sound reinforcement
Touring PA systems
Stage audio systems
Rental sound systems
Fixed installations
Houses of worship
Theaters and auditoriums
Nightclubs and entertainment venues
Multi-zone commercial audio systems
Full-range speaker and top speaker amplification
Technical Specifications
| Item | Specification |
|---|---|
| Model | HA5004SD |
| Amplifier Type | 1U 4-Channel Class D DSP Power Amplifier |
| Output Power @ 8Ω | 4 × 500W |
| Output Power @ 4Ω | 4 × 900W |
| Input Channels | 4 Channels |
| Output Channels | 4 Channels |
| Frequency Response | 20Hz – 20kHz |
| THD+N | < 0.1% |
| Signal-to-Noise Ratio | > 110dB |
| Amplifier Class | Class D |
| DSP Processor | 48kHz sampling frequency, 48-bit fixed-point DSP |
| A/D & D/A Converter | 24-bit |
| DSP Functions | Crossover, EQ, Delay, Limiter, Preset Storage |
| Crossover Filter | Butterworth, Bessel, Linkwitz-Riley |
| Crossover Frequency | 20Hz – 20kHz |
| EQ Range | 20Hz – 20kHz |
| Delay | 0ms – 115ms |
| Display | 2 × 20 LCD |
| Preset Storage | 20 User Programs |
| PC Control | USB and RS-485 |
| Protection | Short Circuit, DCP, OVP, UVP, OCP, OTP |
| Input Impedance | 20kΩ Balanced / 10kΩ Unbalanced |
| Output Connectors | Speakon Connectors |
| Power Requirement | 100–120V 50/60Hz or 200–240V 50/60Hz |
| Dimensions | 483 × 44 × 325 mm |
| Net Weight | 5.8kg |
Why Choose HA5004SD?
The HA5004SD combines a compact 1U rack design, 4-channel high-power Class D amplification, built-in digital DSP processing, reliable cooling, and complete protection functions in one professional amplifier platform. It is an ideal choice for sound companies, system integrators, rental users, touring systems, and fixed installation projects that require powerful output, precise DSP control, compact size, and stable long-term performance.
