SD2504 Compact 1U Class D Professional Amplifier for Karaoke & Home Theater

Product Overview

The SD2504 is a high-efficiency 4-channel Class D power amplifier designed for karaoke systems, home theaters, and professional installations. Delivering 4×250 W @ 8 Ω or 4×450 W @ 4 Ω, it provides powerful, clear, and stable output in a 1U compact rackmount design. Its Class D architecture ensures high energy efficiency, low heat generation, and ultra-low distortion. With dual-voltage compatibility, full protection circuits, and balanced XLR input connections, the SD2504 is built for both entertainment venues and fixed installations where space saving and reliability are crucial.

Key Features & Advantages

1. High-Efficiency Class D Technology
Utilizing advanced Class D circuitry, the SD2504 achieves more than 90 % efficiency with minimal heat output. Its clean power delivery and low total harmonic distortion guarantee outstanding clarity even at high output levels, ideal for karaoke and live playback.

2. 4-Channel Power with Flexible Output
The SD2504 provides 4×250 W @ 8 Ω and 4×450 W @ 4 Ω, suitable for driving multiple full-range speakers, monitors, or zone speakers. Independent channels allow precise system balancing for different room sizes and speaker configurations.

3. Compact 1U Rackmount Design
Designed for convenience and mobility, the slim 1U chassis saves rack space and is easy to integrate into portable or fixed systems. It’s perfect for small studios, karaoke clubs, or mobile AV setups needing high-density power.

4. Comprehensive Protection Circuitry
The SD2504 features full protection against short circuit, DC output, over-temperature, and over/under-voltage, ensuring stable operation during demanding performances or long-term use. 

5. Dual Voltage & Universal Application
Compatible with both AC 110 V and AC 220 V, the SD2504 supports international use. Its rugged components and reliable cooling system make it a professional choice for venues requiring consistent performance under varying conditions.

6. Professional Connectivity & Noise-Free Signal Path
Balanced XLR inputs and Speakon outputs ensure clean signal transmission and minimize interference. Built for long working hours, it maintains audio integrity even in high-humidity karaoke environments or tightly packed racks.

Application Scenarios

• Karaoke Rooms & Entertainment Venues
The SD2504 is designed for multi-mic karaoke environments, ensuring smooth vocals, clear highs and rich lows for each performance. Its 4-channel power makes it ideal for full-range karaoke systems.

• Home Theater & Hi-Fi Systems
Offers immersive surround-sound power for home theaters, with low noise and high clarity suitable for audiophile-grade playback and cinematic effects.

• Conference & Commercial Installations
Supports distributed speaker systems in meeting rooms, shopping malls or restaurants where multiple zones need independent amplification.

• Rental & Portable Audio Systems
With its lightweight, compact form and high efficiency, the SD2504 is a perfect solution for sound rental companies and mobile performers who need portable but reliable amplification.

Specification