HA2504S Compact 1U 4-Channel Class D Power Amplifier for Karaoke and Home Theater
The HA2504S is a compact 1U, four-channel Class D power amplifier designed for karaoke systems, home theaters, commercial audio installations and portable AV applications.
Delivering 4 × 250W at 8Ω or 4 × 450W at 4Ω, the HA2504S provides clear, stable and efficient amplification for multi-speaker and multi-zone sound systems. Its high-efficiency Class D design reduces power consumption and heat generation while maintaining reliable audio performance.
With independent four-channel outputs, balanced XLR inputs, Speakon output connectors and comprehensive protection circuitry, the HA2504S offers a practical and space-saving solution for both fixed installations and mobile audio systems.
Key Features
- 4 × 250W output power at 8Ω
- 4 × 450W output power at 4Ω
- 2 × 800W bridged output power at 8Ω
- High-efficiency Class D amplifier technology
- Four independent amplifier channels
- Compact 1U rack-mount design
- Balanced XLR input connectors
- Professional Speakon output connectors
- Low distortion and high signal-to-noise ratio
- Forced-air cooling system
- Comprehensive amplifier protection
- Separate 110V and 220V versions available
- Lightweight design for portable and fixed applications
Reliable Class D Performance
The HA2504S uses efficient Class D amplifier technology to deliver reliable output power with reduced heat generation and energy consumption.
Its four independent channels make it suitable for powering multiple loudspeakers, configuring different audio zones or operating bi-amplified speaker systems. For applications requiring higher output power, the amplifier also supports 2 × 800W bridged operation at 8Ω.
Compact 1U Design
With dimensions of only 483 × 44 × 325mm, the HA2504S occupies just one rack unit. Its compact chassis helps save valuable rack space, making it ideal for karaoke rooms, home theaters, conference systems, equipment racks and portable AV applications.
At only 4.2kg net weight, the amplifier is also easy to transport and install.
Comprehensive Protection
The HA2504S incorporates multiple protection circuits to improve operational safety and long-term reliability, including:
- Short-circuit protection
- DC protection
- Overvoltage protection
- Undervoltage protection
- Overcurrent protection
- Overtemperature protection
The forced-air cooling system helps maintain a stable operating temperature during extended use.
Available Operating Voltages
The HA2504S is available in two voltage versions:
- 110V version: AC 90–135V
- 220V version: AC 180–265V
Please select the correct voltage version according to the power supply standard in your country or installation location.
Applications
The HA2504S is suitable for:
- Karaoke rooms and entertainment venues
- Home theater and multimedia systems
- Conference rooms and corporate AV systems
- Restaurants, bars and retail spaces
- Multi-zone background music systems
- Small live sound systems
- Rental and portable AV systems
- Fixed commercial audio installations
Technical Specifications
| Item | Specification |
|---|---|
| Model | HA2504S |
| Amplifier Class | Class D |
| Number of Channels | 4 |
| Output Power at 8Ω | 4 × 250W |
| Output Power at 4Ω | 4 × 450W |
| Bridged Output Power at 8Ω | 2 × 800W |
| Frequency Response | 20Hz–20kHz, ±1dB |
| THD+N | <0.1% at 1kHz, 1W, 8Ω |
| Signal-to-Noise Ratio | >109dB at 1kHz |
| Channel Separation | >70dB at 1kHz |
| Input Sensitivity | 0.77V |
| Input Impedance | 20kΩ |
| Input Connectors | Balanced XLR |
| Output Connectors | Speakon |
| Protection | Short Circuit, DC, Overvoltage, Undervoltage, Overcurrent and Overtemperature |
| 110V Version | AC 90–135V |
| 220V Version | AC 180–265V |
| Dimensions (W × H × D) | 483 × 44 × 325mm |
| Packing Dimensions | 550 × 100 × 450mm |
| Net Weight | 4.2kg |
| Gross Weight | 5.2kg |
Why Choose the HA2504S?
The HA2504S combines four-channel output, efficient Class D amplification and a compact 1U chassis in one lightweight unit. It is an ideal choice for customers who need reliable multi-channel amplification without occupying excessive rack space.
Whether used in a karaoke system, home theater, conference room, commercial venue or portable AV setup, the HA2504S delivers clear sound, flexible system configuration and dependable protection.
