Diamond Audio HXM800.4D 4-Channel Harley Amplifier SKU: HXM800.4D



Free System Design Call Now 1(888)311-0016

The HXM800.4D amplifier is one of our top go to amplifiers for powerful Harley sound systems. This amplifier is capable of driving extreme level systems. Due to the amplifier's 2 ohm stability this amplifier is well suited to situations with twin pairs of 4 ohm speakers. For example: 4 ohm speakers in the fairing and identical 4 ohm speakers in the lower fairings can be driven off of just two channels of the amplifier and the HXM800.4D will double its output to accommodate the demand leaving two channels available for rear speakers. Or even two pairs of rear speakers!


  • Compatible Year - 1998+ Street Glide, 2015+ Road Glide
  • Compatible Model - Street Glide, Road Glide
  • Location - Fairing, Bag
  • Additional Adapter Required - Yes - Wire Harness
  • Modification Required - No
  • Plug & Play - No
  • Works with Electric Lid Locks - N/A


1 year


Water Resistant

Extreme Level Performance

Road Glide

Street Glide

  • 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
  • Bridgeable for high power operation
  • Balanced differential inputs for superior noise rejection
  • Input sensitivity from 200mV to 10V accepts RCA and Speaker level input
  • Input selector switch (2CH/4CH)
  • Selectable auto-turn-on modes: Signal Sensing (VOX), 12V Remote (REM), and DC offset (DC)
  • Full range, line-level outputs provided to send a signal to another amplifier
  • Built-in BTR Port (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

Free Radio Flash Loaner Tool

Flash Your Bike Yourself and Be Sure That the Job Is Done Right

Our flash tool rental kit ships with all of the parts required to flash any Harley touring bike radio from 2014 - current year. The kit ships with a return shipping label for your convenience. After you are finished with the tool simply drop it in the mail and receive a full refund for your $200 deposit.

$120.00 Value! 

Read all of the details here


  • RMS Power Rating: RMS Power (2Ω): 200 W X 4, RMS Power (4Ω): 120 W X 4, Bridged (mono 4Ω): 400W X 2 (4Ω ONLY)
  • Type: Topology: Full Range Class D
  • Power Supply: Power Supply: Full PWM / Power Supply Threshold: 10.0VDC-17.0VDC
  • Distortion: THD (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: 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
  • Fully Variable Crossover(@12dB per Octave): Variable High-Pass: 40Hz - 400Hz, Variable Low-Pass: 40Hz - 400Hz, Variable Sub-Sonic: N/A
  • Dimensions: 9.3” x 5.27” x 1.75” ( L x W x H)

What's Included

  • (1) 4-Channel Amplifier
  • (1) Owners Manual