Skip to product information
1 of 10

Diamond Audio

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

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

review stars 1 Review

25% Sale

Only left!

image

Free Delivery

image

Limited Stocks

In Stock - Ready to be Shipped

Regular price $649.99 Sale price $487.99
Shipping calculated at checkout.

Quantity

View full details
SALE ENDS IN
07 HRS
23 MINS
28 SECS
DON'T MISS IT!

Popular Add on

$30.00

$22.99

$70.00

$52.99

Add-Ons Bundle

$30.00

$22.99

$70.00

$52.99

Bundle Offer

$100.00

$75.98

Recently Viewed

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

Power your entire audio system with rugged performance using 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.

The Diamond Audio MOTORSPORT 4-Channel Amplifier delivers powerful, reliable, and crystal-clear performance, making it the ideal solution for high-performance outdoor and marine audio systems.

Features

• 4-channel full range Class D amplifier
• 120W x 4 @ 4Ī© / 200W x 4 @ 2Ī© / 400W x 2 bridged @ 4Ī©
• Water-resistant design for marine and powersports use
• Conformal-coated circuit boards for durability
• Balanced differential inputs for noise-free operation
• Variable HPF / LPF crossovers and phase control
• Anodized aluminum heat sink for superior cooling
• Output clip indicators for precise system setup
• Top-mounted controls for easy adjustment

What our Experts Think
  • High-efficiency 4-channel Class D amplifier engineered to deliver clean, powerful audio for marine, powersports, and automotive sound systems.
  • Ideal for full-range speaker setups, providing consistent power with excellent clarity and dynamic performance across all channels.
  • Compact, space-saving design allows for flexible installation in boats, UTVs, motorcycles, and vehicles with limited mounting space.
  • Built for demanding environments with durable construction and efficient heat management for reliable long-term performance.
  • An excellent choice for enthusiasts seeking a versatile amplifier that combines strong output, energy efficiency, and dependable sound quality.
Ā  Ā 
Q&A Ā  Ā 

Q: What is the Diamond Audio HXM800.4D designed for?
A: The HXM800.4D is a 4-channel full-range Class D amplifier built for marine, motorcycle, UTV, ATV, and other powersports audio systems, delivering high-output performance in harsh environments.

Q: How much power does the HXM800.4D produce?
A: It delivers 120W x 4 RMS @ 4Ī©, 200W x 4 RMS @ 2Ī©, or 400W x 2 RMS bridged @ 4Ī©, providing ample power for premium full-range speakers.

Q: Is the HXM800.4D weather resistant?
A: Yes. It features conformal-coated circuit boards and a water-resistant design to withstand moisture, dust, and demanding outdoor conditions.

Q: Does the amplifier include built-in tuning controls?
A: Yes. It includes variable high-pass and low-pass crossovers (40–400Hz), phase control, balanced differential inputs, and selectable REM, VOX, and DC turn-on modes for flexible installation and tuning.

Q: Why choose the Diamond Audio HXM800.4D?
A: It combines compact size, 800W RMS output, rugged weather-resistant construction, and advanced Class D efficiency, making it an excellent choice for high-performance marine and powersports audio systems.


Maintenance Tips Ā  Ā 
  • Clean the amplifier with a soft, dry microfiber cloth to prevent dust accumulation.
  • Ensure adequate airflow around the amplifier to maintain efficient cooling and prevent overheating.
  • Inspect power, ground, RCA, and speaker connections regularly for tight, corrosion-free contacts.
  • Check fuses and wiring periodically for signs of wear or damage.
  • Keep the amplifier away from excessive moisture, direct sunlight, and extreme temperatures.
  • Verify mounting hardware remains secure to minimize vibration and ensure long-term reliability.