DS18 SXE-4000.4D/RD Car Amplifier – 4-Channel Class D, 275W x4 @4Ω, 750W Bridged

Powerful, compact car amplifier for a custom 4-channel setup

Designed for car audio enthusiasts who crave more control and cleaner power, the DS18 SXE-4000.4D/RD is a four-channel Class D amplifier that fits elegantly into tight dashboards and trunks alike. It delivers solid, low-noise performance with a resonance-free sound that reveals more detail in your tracks.

Whether you’re upgrading factory speakers or building a multi-speaker system, the SXE-4000.4D is built to scale with your install. Its robust output options let you tailor the system to your vehicle’s acoustics and your listening preferences without wasting space or energy.

Power and efficiency you can feel

The SXE-4000.4D class D design emphasizes efficiency, meaning less heat and more of your music in the cabin. In practice, you’ll see a flexible power profile: up to 275W RMS per channel at 4 ohms, 430W per channel at 2 ohms, and up to 750W when bridged across two channels at 4 ohms. This range supports punchy bass, clear highs, and controlled mids—without consuming excessive power from the electrical system.

What you can tune and control

Take charge of your sound with features that invite hands-on tuning. The SXE-4000.4D offers a fully variable crossover, adjustable input sensitivity, and a multi-channel layout that makes it straightforward to balance four speakers or pair a sub with satellites.

• Fully variable crossover for precise frequency shaping
• Adjustable gain input sensitivity for clean, distortion-free levels
• Independent channel control across four outputs for flexible configurations

Compact size, big performance

As a Class D amplifier, the SXE-4000.4D uses power transformers that are significantly smaller than typical amps. The result is a big-power, small-footprint solution that meshes with custom builds where space is at a premium yet performance matters.

• Small footprint ideal for custom installs
• Efficient cooling and quiet operation during extended listening
• Solid, durable build designed for the automotive environment

Real-world ideas for your system

These ideas illustrate how the SXE-4000.4D can fit into everyday driving setups. Whether you’re new to upgrading or refining a high-end install, the amp opens possibilities for more confident stage realism in car audio and a more enjoyable listening experience on commutes or road trips.

Why choose DS18

DS18’s SXE line embodies the brand’s Never Stop Innovating mindset, blending cutting-edge electronics with practical, road-ready design. It’s not about promises; it’s about the potential for an articulate, dynamic soundstage in your vehicle when matched with compatible speakers and a proper installation.