4-Channel Full Range Class D Amplifier

Power your entire audio system with rugged performance using the Diamond Audio MOTORSPORT Series 4-Channel Full Range Class D Amplifier. Designed for marine, motorcycle, UTV, ATV, and powersports audio systems, this 4-channel amplifier delivers exceptional sound quality while standing strong against harsh outdoor conditions.

Built with advanced full-range Class D digital technology, the Diamond Audio MOTORSPORT 4-channel amplifier provides impressive output with 120W x 4 at 4 ohms and 200W x 4 at 2 ohms, along with 400W x 2 bridged at 4 ohms for higher power applications. This makes it ideal for powering full-range speakers or bridging channels for more demanding audio setups, delivering clean, dynamic sound across the entire frequency spectrum.

Engineered for durability, this water-resistant amplifier features conformal-coated multi-layer circuit boards, protecting internal components from moisture, dust, and extreme environments. The anodized extruded aluminum heat sink enhances thermal performance, ensuring efficient cooling during extended play.

The Diamond Audio MOTORSPORT amplifier also includes balanced differential inputs, ensuring noise-free signal transmission for crystal-clear audio performance. With variable high-pass and low-pass crossovers (40Hz–400Hz) and phase control, this versatile Class D amplifier allows precise tuning to optimize your sound system.

Installation is simple with selectable REM, VOX, and DC turn-on modes, making it compatible with factory and aftermarket head units. Additional features such as top-mounted controls, output clip indicators, and an illuminated logo provide convenience and a premium aesthetic.

Key Features

• 4-channel full range Class D amplifier
• 120W x 4 @ 4Ω / 200W x 4 @ 2Ω / 400W x 2 bridged @ 4Ω
• Water-resistant design for marine and powersports use
• Conformal-coated circuit boards for durability
• Balanced differential inputs for noise-free operation
• Variable HPF / LPF crossovers and phase control
• Anodized aluminum heat sink for superior cooling
• Output clip indicators for precise system setup
• Top-mounted controls for easy adjustment

The Diamond Audio MOTORSPORT 4-Channel Amplifier delivers powerful, reliable, and crystal-clear performance, making it the ideal solution for high-performance outdoor and marine audio systems.