Diamond Audio

Diamond Audio HXM800.2D 2 Channel 800 Watt Offroad Amplifier

SKU: HXM800.2D
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The Diamond Audio HXM800.2D is the perfect amplifier if you need a power source to push 2 sub if your UTV or any marine application. With 800 watts RMS and 2 channels to send the power to, this amp is great for a set of subs.

  • Ultra-compact, high density aluminum alloy chassis provides superior thermal stability
  • Four layer,glass epoxy circuit board for enhanced performance and reliability
  • Circuit board conformal coated (water resistant) for marine applications
  • Full Range Class D amplifier technology
  • Bridgeable for high power operation
  • Balanced differential inputs for superior noise rejection 
  • Input sensitivity from 200mV to 10V accepts Line (RCA) and Speaker level input
  • Selectable auto-turn-on modes: Signal Sensing (VOX),12V Remote (REM) and DC offset (DC)
  • Fully variable, 12 dB per octave, electronic crossover
  • Full range, line level outputs provided to send signal to another amplifier
  • Adjustable Bass EQ (MICRO-USB) to connect our optional Bluetooth receiver-controller
  • Top mounted  controls for convenient adjustment 
  • Integrated soft clip light for quick system set-up
  • Illuminated logo

Download the Diamond Audio HXM800.2D Owners Manual


RMS Power Rating

  • RMS Power (2Ω):  400 W X 2  
  • RMS Power (4Ω):  300 W X 2  
  • Bridged (mono 1Ω): N/A
  • Bridged (mono 2Ω): N/A
  • Bridged (mono 4Ω): 800 W X 1 (4Ω ONLY)


  • Topology: Full Range Class D

Power Supply

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


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

Input Sensitivity

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

Input Impedance

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

Output Stage

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

Crossover(@12dB per Octave)

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

Recommended Fuse Rating

  • ATC: N/A


  • Length x Width x Height (Inches): 9.74 x 5.27 x 1.75
  • Length x Width x Height (mm): 247.6 x 133.9 x 44.5

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