B2 Audio RIOT 4-Channel 1.8K 1800W 2-Ohm Class D Full Range Amplifier w/ RGB LED Illumination

The B2 Audio RIOT 4-Channel 1800W Class D amplifier delivers up to 1800W total output in a compact half-bridge chassis, built for space-conscious installs and high-demand car audio systems. It features RGB LED illumination for visual customization while maintaining efficient Class D operation.

• Powerful multi-channel performance: 4 x 300W RMS at 4 ohms, 4 x 450W RMS at 2 ohms, or 2 x 900W RMS bridged at 4 ohms. This gives flexible configurations to drive multiple speakers at 4 ohms, increase output at 2 ohms, or bridge channels for higher-output applications.
• Half-bridge Class D design: Efficient power delivery with reduced heat generation, lower component stress, and stable operation on stock or mildly upgraded electrical systems.
• Full crossover control: Adjustable low-pass and high-pass filters (50 Hz to 5 kHz, 12 dB/oct) for precise speaker integration and improved stage separation.
• Integrated RGB LED illumination: Customizable lighting with multiple sound-activated modes; lighting can be disabled for a stealth install.
• Smart protection system: Power, protection, and clip indicators help maintain safe operation and monitor performance.
• Compact design: Space-saving footprint facilitates installation in tight spaces without sacrificing channel count or output.

In a real-world build, the RIOT 1800W provides four-channel power to front-stage speakers or active configurations, with bridging available for higher-output applications. The 50 Hz–5 kHz crossover range allows precise filtering to optimize imaging and clarity, while the 2-ohm capability enables higher performance under demanding loads. RGB lighting offers an aesthetic upgrade with selectable sound-activated patterns or a disable option for a stealth installation. For optimal performance and stability, upgrading your vehicle’s electrical system is recommended, especially when operating at lower impedances or higher output levels.