4-Channel Full Range Digital Amplifier

Upgrade your entire system with the Diamond Audio DMD Series 4-Channel Full Range Class D Digital Amplifier, engineered to deliver clean power, efficiency, and exceptional value for modern car audio builds. Designed for versatility and performance, this 4-channel car amplifier is perfect for powering component speakers, coaxial speakers, or bridging channels for increased output.

Built with advanced Class D digital amplifier technology, the Diamond Audio 4-channel amplifier delivers 150W x 4 at 2 ohms and 100W x 4 at 4 ohms, with the ability to bridge into 320W x 2 at 4 ohms. This flexible power configuration makes it ideal for both full-range speaker systems and hybrid setups that demand strong, dynamic output with minimal distortion.

Engineered using 4-layer FR4 PCB construction and advanced SMD circuitry, the DMD Series amplifier ensures consistent performance, efficient heat management, and long-term reliability. Balanced differential inputs provide clean, noise-free signal transmission, making this amplifier suitable for both factory and aftermarket head units.

The Diamond Audio DMD 4-channel amplifier includes variable high-pass and low-pass crossover controls (35Hz–350Hz), allowing precise tuning for optimal sound staging and speaker protection. With up to 18dB bass boost, you can enhance low-frequency response for a richer and more immersive listening experience.

Designed for easy installation, this full-range Class D amplifier features selectable 2-channel or 4-channel input configurations and REM, VOX, and DC turn-on modes, ensuring seamless integration into any vehicle. The LED-lit logo provides clear power and protection status, while built-in short circuit, thermal, and voltage protection safeguards your system.

Key Features

• 4-channel full range Class D digital amplifier
• 150W x 4 @ 2Ω / 100W x 4 @ 4Ω / 320W x 2 bridged
• Compact, high-efficiency amplifier design
• 4-layer PCB with advanced SMD technology
• Variable HPF/LPF crossover controls (35Hz–350Hz)
• Up to 18dB bass boost for enhanced sound
• Balanced differential inputs for clean signal
• Selectable 2CH / 4CH input modes
• REM / VOX / DC auto turn-on options

The Diamond Audio DMD 4-Channel Amplifier delivers powerful, clean, and reliable performance, making it the perfect solution for high-quality, budget-friendly car audio systems.