Diamond Audio DMD600.4D 4-Channel DMD Series Full Range Class-D Digital Amplifier

Diamond Audio DMD600.4D

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.

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

Specifications

Power Rating

• 150W x 4 @ 2Ω
• 100W x 4 @ 4Ω
• 320W x 2 @ 4Ω (Bridged)

Power Supply

• Power Supply : Full WPM
• Power Supply Threshold : 10.0V-17.0V (DC)
• Idle Current : (0.7A)

Distortion

• THD 4 (1KHZ @4Ω) : 0.05%
• S/N Ratio (A Weighted @1W) : -77.2dBA
• S/N Ratio (A Weighted @FP) : -98.9dBA

Input Sensitivity

• Low Level Input : 0.2mV-10.0V
• High Level Input : Up to 25W RMS

Input Impedance

• Low Level Input : 22KΩ
• High Level Input : 22KΩ

Output Stage

• Output Impedance : 0.047Ω
• Damping Factor (50Hz@4Ω) : >250
• Bandwidth (-3db) : 10Hz-350Hz

Crossover (-12dB/Oct)

• Variable High-Pass : N/A
• Variable Low-Pass : 35Hz-350Hz

Fuse Ratings

• ATC : 3 x 40A

Dimensions

• L x W x H : 7.6" x 6.85" x 1.9" (193.1 x 174 x 48.4)mm