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Diamond Audio

Diamond Audio Motorcycle Amplifier MICRO81U

Diamond Audio Motorcycle Amplifier MICRO81U

Regular price $374.99 USD
Regular price $499.99 USD Sale price $374.99 USD
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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 Motorcycle Amplifier MICRO81U

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

  • BrandDiamond Audio
  • SKUMICRO81U
  • 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 Monoblock Class D Amplifier

Unleash powerful, efficient bass performance with the Diamond Audio MICRO8U 1-Channel Monoblock Class D Amplifier, designed for enthusiasts who demand compact size, high output, and all-weather durability. As part of the advanced Diamond Audio MICRO8U amplifier series, this monoblock car audio amplifier delivers exceptional performance for subwoofers in car, marine, motorcycle, and powersports audio systems.

Engineered from the ground up, the Diamond Audio MICRO8U monoblock amplifier features a full-range Class D design, providing clean, efficient power while minimizing heat and maximizing performance. With 300W RMS at 2 ohms and 175W RMS at 4 ohms, this 1-channel amplifier is ideal for driving subwoofers with tight, controlled bass and consistent output, even in demanding environments.

Built for versatility, the MICRO8U Class D amplifier is conformal-coated for all-weather applications, making it perfect for marine audio systems, motorcycles, ATVs, UTVs, and outdoor installations. The protective coating helps guard against moisture, dust, and environmental exposure, ensuring long-lasting reliability wherever your system is installed.

The compact amplifier design allows for easy installation in tight spaces, while the uniform MICRO8U platform ensures a clean and streamlined look across your entire audio setup. With selectable REM, VOX, and DC turn-on modes, along with flexible input configurations, this monoblock amplifier integrates seamlessly into both factory and aftermarket systems.

Advanced tuning features include a 40–400Hz crossover filter, wide frequency response (10Hz–33kHz), and adjustable input sensitivity (0.2–10V), allowing precise control over your subwoofer performance.

Key Features

1-channel monoblock Class D amplifier
300W x 1 @ 2Ω / 175W x 1 @ 4Ω RMS
Compact, space-saving design
Conformal-coated for all-weather durability
Selectable REM / VOX / DC turn-on modes
Adjustable crossover and input sensitivity
• Ideal for subwoofer and bass applications
• Includes RCA input & speaker output harness kits

The Diamond Audio MICRO8U Monoblock Amplifier delivers powerful, clean bass in a compact and rugged design, making it the perfect solution for high-performance car audio and outdoor sound 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.