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Diamond Audio

Diamond Audio Marine Amplifier HXM1200.1D

Diamond Audio Marine Amplifier HXM1200.1D

Regular price $719.99 USD
Regular price Sale price $719.99 USD
Sale Sold out
WEATHER READY
  • Weather Chassis StyleMarine Grade, Water-Resistant
Quantity
✔ In Stock & Ready To Ship
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Mei from Wide Open Sound

Wide Open Sound · Curated gear

Diamond Audio Marine Amplifier HXM1200.1D

WOS Pick What this amp does in 10 seconds — expand for full specs.

  • BrandDiamond Audio
  • SKUHXM1200.1D
  • Channels1
Mei says

"Match this amp to your speakers and sub. Wrong power or wiring = weak system — do it once, do it right."

The stuff you'll actually notice
  • 1-channel platform.
Product description

1-Channel Class D Monoblock Amplifier

Unleash extreme bass performance with the Diamond Audio MOTORSPORT Series 1-Channel Class D Monoblock Amplifier, engineered for high-output systems that demand power, precision, and durability. Designed for marine audio, motorcycles, UTVs, ATVs, and powersports applications, this high power monoblock amplifier delivers exceptional performance in the toughest environments.

Built with advanced full-range Class D digital technology, the Diamond Audio MOTORSPORT monoblock amplifier produces massive output with 1200W RMS at 1 ohm, 850W at 2 ohms, and 550W at 4 ohms, making it ideal for driving high-performance subwoofers. Whether you're upgrading your marine subwoofer system or building a powerful off-road audio setup, this subwoofer amplifier delivers deep, tight, and controlled bass.

Designed for durability, this water-resistant amplifier features conformal-coated multi-layer circuit boards, protecting against moisture, dust, and harsh outdoor conditions. The anodized extruded aluminum heat sink ensures superior thermal performance, keeping the amplifier cool even under heavy load.

The Diamond Audio MOTORSPORT amplifier also includes balanced differential inputs for noise-free signal transmission and a DirectFET power MOSFET output stage for efficient, high-quality performance. With a variable low-pass crossover (30Hz–300Hz), subsonic filter (10Hz–55Hz), and phase control, this versatile monoblock amplifier allows precise tuning for optimal bass response.

Installation is seamless with selectable REM, VOX, and DC turn-on modes, ensuring compatibility with factory and aftermarket systems. Additional features such as output clip indicators, top-mounted controls, and an included bass remote control provide convenience and real-time system adjustment.

Key Features

1-channel Class D monoblock amplifier
1200W @ 1Ω / 850W @ 2Ω / 550W @ 4Ω RMS power
Water-resistant design for marine and powersports use
Conformal-coated circuit boards for durability
Variable LPF, subsonic filter, and phase control
Balanced differential inputs for clean signal
Anodized aluminum heat sink for efficient cooling
Output clip indicators for precise setup
• Includes bass remote control

The Diamond Audio MOTORSPORT Monoblock Amplifier delivers powerful, reliable, and precision-tuned bass, making it the ultimate solution for high-performance outdoor and marine audio systems.

Power breakdown
Inputs, filters & control
Build, wiring & install
Protection & performance
Full specifications
Amplifier
Amp Channels 1
Power ratings
Inputs & filters
Wiring
Weather / environment
Support
Support & warranty

Need help choosing or installing?

We build indestructible, IP-rated systems for marine, motorcycle, UTV, and automotive. If you want a matched setup, we’ll guide you to the right gear the first time.