Diamond Audio HXM800.4D HXM Series 4-Channel Full Range Class-D Water-Resistant Marine Amplifier

Diamond Audio HXM800.4D

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.

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
• Fine Tuned Variable HPF / LPF Crossovers and Phase Control
• Anodized Aluminum Heat Sink Provides Superior Thermal Performance
• Output Clip Indicators for Precise System Set-up
• Top Mounted Controls for Convenient Amplifier Adjustment
• Full Range Class D IR Chipset
• Illuminated Logo / Fully Concealed Mounting

Specifications :

HXM Series 4-Channel Full Range Class-D Marine Amplifier

Power Rating

• RMS Power (@ 2Ω) : 200 Watt x 4 Channel
• RMS Power (@ 4Ω) : 120 Watt x 4 Channel
• RMS Power Bridged (@ Mono 4Ω) : 400 Watt x 2 Channel

Power Supply

• Power Supply : Full PWM
• Power Supply Threshold : 10.0VDC - 17.0VDC
• Idle Current : 0.7A

Distortion

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

Input Sensitivity

• Low Input Level : 200mV - 10.0V
• High Input Level : Up to 25W RMS

Input Impedance

• Low Input Level : 22KΩ
• High Input Level : N/A

Output Stage

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

Crossover (-12dB/Oct)

• Variable High-Pass : 40Hz - 400Hz
• Variable Low-Pass : 40Hz - 400Hz
• Variable Sub-Sonic : N/A

Fuse Rating

• ATC : 40A

Dimensions

• L x W x H : 9.3" x 5.27" x 1.75" (237.0 x 133.9 x 44.5)mm