4×350w 4-channel Class D Amplifier Mixer Amplifier OEM ODM Logo Customization

 Professional 4-Channel 350W Class D Power Amplifier – 100V & 8Ω Rack-Mount Audio Solution

Looking for a **high-density, multi-zone 350W Class D power amplifier** that maximizes output while minimizing rack space? Our **4-channel 350W digital power amplifier** delivers **four independent channels of clean, reliable power** for both **constant voltage (100V)** and **constant impedance (8Ω)** speaker systems. Whether you're powering a **multi-zone commercial audio system**, **large-scale retail environment**, **corporate campus**, **transportation hub**, or **distributed PA network**, this 4-channel powerhouse is the ultimate space-saving solution.

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## Why Choose This 4-Channel 350W Class D Amplifier?

Engineered with advanced **Class D technology**, this amplifier packs **four 350W channels** into a compact **2U rack-mount chassis** (485×400×88mm), delivering **exceptional power density** and **energy efficiency** with minimal heat generation. The ability to switch between **100V constant voltage** (perfect for distributed ceiling speaker systems) and **8Ω constant impedance** (ideal for traditional loudspeakers) makes it incredibly versatile for system integrators and installation contractors.

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## Advanced Audio Features

- **Four balanced inputs** with **independent volume controls** per channel – giving you complete command over each zone's audio level.
- **Wide frequency response** (80Hz–20kHz ±1dB) delivers natural, accurate sound for both background music and clear voice paging.
- **Ultra-low THD** (≤0.1%) and **high signal-to-noise ratio** (≥80dB) ensure pristine, noise-free audio quality even at maximum output.
- **Line sensitivity and line output at 0dB** enable seamless integration with mixers, DSP units, and other source equipment.
- **350W per channel** provides ample headroom for dynamic content and high-SPL applications.

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## Comprehensive Protection & Real-Time Monitoring

This amplifier features a **full protection circuit suite** that safeguards both the amplifier and connected speakers:
- **DC protection** – prevents speaker-damaging DC offsets
- **Overload protection** – limits output during excessive signal peaks
- **Over-temperature protection** – operates reliably from -5℃ to 80℃
- **Short-circuit protection** – instant response to output shorts

Front-panel **signal, clipping, overload, and protection indicators** provide real-time visual status. When input signals exceed safe levels, or when overload, overheating, or short-circuit conditions occur, the **protection indicators illuminate** – allowing immediate intervention to prevent system failure.

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## Technical Specifications

| Parameter | Specification |
| :--- | :--- |
| Number of Channels | 4 |
| Output Power per Channel | 350W |
| Output Modes | 100V constant voltage / 8Ω constant impedance |
| Frequency Response | 80Hz–20kHz ±1dB |
| THD | ≤0.1% |
| SNR | ≥80dB |
| Line Sensitivity | 0dB |
| Line Output | 0dB |
| Operating Temperature | -5℃～80℃ |
| Operating Humidity | 20%～80% RH (non-condensing) |
| Power Supply | AC220V/50Hz |
| Dimensions | 485×400×88mm (2U) |

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## Ideal Multi-Zone Applications

This **4-channel amplifier** is the perfect choice for:
- **Multi-zone retail stores and shopping malls** – separate audio zones for different departments
- **Corporate offices and campuses** – independent paging and music for each floor or building
- **Hotels and hospitality venues** – lobby, restaurant, conference rooms, and pool areas
- **Airports and transportation hubs** – distributed PA with zone-specific announcements
- **Educational institutions** – multiple classrooms, lecture halls, and gymnasiums
- **Houses of worship** – sanctuary, fellowship hall, and nursery zones
- **Restaurant and bar chains** – background music tailored to each location
- **Gym and fitness centers** – separate audio for workout areas, studios, and lounges

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Space-Saving, High-Power Design

With **four channels in just 2U of rack space**, this amplifier dramatically reduces equipment footprint while delivering the power typically requiring multiple units. The rugged steel construction ensures durability for permanent installation in equipment racks, while the efficient cooling design guarantees reliable performance in demanding 24/7 environments.