Diamond Audio DMD500.1D 1-Channel DMD Series Full Range Class D Monoblock Digital Amplifier

Diamond Audio DMD500.1D

Step up your bass performance with the Diamond Audio DMD500.1D Monoblock Class D Digital Amplifier, engineered to deliver powerful, clean, and efficient low-frequency output for modern car audio systems. Designed as part of the high-value DMD Series amplifiers, the DMD500.1D combines advanced technology, compact design, and serious power for enthusiasts who want more impact without breaking the bank.

Built using advanced Class D digital amplifier technology, the Diamond Audio DMD500.1D amplifier delivers 500W RMS at 2 ohms and 340W RMS at 4 ohms, providing strong, controlled bass for subwoofers in cars, trucks, and custom builds. Its high-efficiency design minimizes heat while maximizing output, ensuring stable performance during extended listening sessions.

Engineered with 4-layer FR4 PCB construction and precision SMD circuitry, this monoblock car amplifier offers consistent power delivery and long-term durability. The inclusion of balanced differential inputs ensures clean, noise-free signal transmission, even in complex installations.

Fine-tune your system with variable low-pass and high-pass crossover controls (35Hz–350Hz), adjustable phase control, and up to 18dB bass boost, allowing you to dial in the perfect subwoofer response. The included remote bass knob provides convenient, real-time control over bass levels from the driver’s seat.

Designed for easy installation, the DMD500.1D Class D amplifier features selectable REM, VOX, and DC turn-on modes, making it compatible with both factory and aftermarket head units. A LED-lit logo indicates power and protection status, while built-in short circuit, thermal, and voltage protection ensures reliable operation.

Features:

• DMD500.1D Monoblock Class-D Digital Amplifier
• 500W RMS @ 2Ω / 340W RMS @ 4Ω
• Compact, High-efficiency Amplifier Design
• 4-Layer PCB with Advanced SMD Technology
• Variable LPF/HPF Crossover and Phase Control
• Up to 18dB Bass Boost for Enhanced Output
• Balanced Differential Inputs for Clean Signal
• Selectable REM / VOX / DC Turn-on Modes
• Includes Remote Bass Knob and LED Status Indicator

Specifications

Power Rating

• 500W RMS @ 2Ω
• 340W RMS @ 4Ω

Power Supply

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

Distortion

• THD 4 (1KHz @4Ω): 0.07%
• S/N Ratio (A Weighted @1W) : -77.4 dBA
• S/N Ratio (A Weighted @FP) : -97.4 dBA

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 : N/A

Output Stage

• Output Impedance : 0.047Ω
• Damping Factor (50Hz@4Ω) : >250
• Bandwidth (-3dB) : 10Hz-35kHz

Crossover (-12dB/Oct)

• Variable High-Pass : 35Hz-350Hz
• Variable Low-Pass : 35Hz-350Hz

Fuse Ratings

• ATC : 2 x 30A

Dimensions

• L x W x H : 7.2" x 6.85" x 1.9" (183.1 x 174 x 48.4)mm