Diamond Audio 4-Channel MICRO8U Series Full Range Class D Amplifier - MICRO84U

Diamond Audio 4-Channel MICRO8U Series Full Range Class D Amplifier - MICRO84U

Power your entire system with precision and efficiency using the Diamond Audio MICRO8U 4-Channel Full Range Class D Amplifier. Designed for high-performance audio enthusiasts, this compact 4-channel amplifier delivers clean, dynamic sound while offering the durability needed for car audio, marine, motorcycle, and powersports applications.

Part of the advanced Diamond Audio MICRO8U amplifier series, this Class D car audio amplifier is engineered to provide maximum efficiency and increased power output in a compact footprint. With 80W x 4 at 4 ohms, 150W x 4 at 2 ohms, and 300W x 2 bridged at 4 ohms, the MICRO8U 4-channel amplifier is perfect for powering full-range speakers or bridging channels for more demanding applications.

Built for real-world environments, the Diamond Audio MICRO8U amplifier features a conformal-coated circuit board, making it ideal for all-weather use. Whether installed in a boat, motorcycle, ATV, UTV, or outdoor vehicle, this weather-resistant amplifier is designed to withstand moisture, dust, and harsh conditions without sacrificing performance.

The ultra-compact amplifier design allows for flexible installation in tight spaces, while the uniform MICRO8U platform ensures a sleek and professional appearance across your entire system. With selectable REM, VOX, and DC turn-on modes, as well as 2-channel and 4-channel input options, this versatile car audio amplifier integrates seamlessly into factory or aftermarket setups.

Advanced tuning controls include a 40–400Hz crossover filter, wide frequency response (10Hz–33kHz), and adjustable input sensitivity (0.2–10V), allowing precise customization for optimal sound performance.

The Diamond Audio MICRO8U 4-Channel Amplifier delivers powerful, clean, and reliable performance in a compact design, making it the perfect solution for high-performance audio systems in any environment.

Features

• 4-channel full range Class D amplifier
• 80W x 4 @ 4Ω / 150W x 4 @ 2Ω / 300W x 2 bridged
• Compact, space-saving design
• Conformal-coated for all-weather durability
• Selectable REM / VOX / DC turn-on modes
• 2CH / 4CH input flexibility
• Adjustable crossover and input sensitivity
• Includes RCA input & speaker output harness kits

What our Experts Think

• Ultra-compact 4-channel Class D amplifier designed for tight installations in motorcycles, powersports, and custom builds.
• Delivers clean, full-range power with high efficiency and low heat output for reliable long-term use.
• MICRO8U tuning platform support enables advanced DSP-style control and precise system tuning (when paired with compatible modules).
• High signal-to-noise performance ensures clear, distortion-free audio even at high volume levels.
• Flexible 4-channel design supports front/rear speaker upgrades or bridged high-power configurations.
• Built for durability with rugged, vibration-resistant construction ideal for harsh riding environments.
• Perfect choice for riders seeking a compact yet powerful amplification solution for premium audio upgrades.

   
Q&A    

Q: What is the Diamond Audio MICRO84U?
A: A compact 4-channel Class D full-range amplifier from the MICRO8U series, designed for high-efficiency, all-weather performance in cars, motorcycles, and powersports systems.

Q: How much power does it produce?
A: It delivers approximately 80W x 4 @ 4Ω, 150W x 4 @ 2Ω, and up to 300W x 2 bridged @ 4Ω for flexible system setups.

Q: What makes the MICRO84U different from standard amplifiers?
A: It uses a compact micro chassis with Class D efficiency, conformal-coated circuitry for weather resistance, and high-output MOSFET design for clean, dynamic sound in tight installation spaces.

Q: Is it suitable for motorcycles and marine use?
A: Yes. Its sealed, conformal-coated construction is built to resist moisture, dust, and vibration, making it ideal for Harley-Davidson and powersports applications.

Q: Can it run a full speaker system?
A: Yes. It can power front and rear speakers directly, or be bridged for higher power applications like midrange or subwoofer duty.

Q: What type of sound quality can you expect?
A: High efficiency, low distortion, and strong output, delivering clear sound even at highway speeds or open-air riding conditions.

Maintenance Tips

• Mount in a well-ventilated, dry location to prevent overheating.
• Regularly check power, ground, and speaker connections for tightness and corrosion.
• Keep amplifier free from dust buildup using a soft, dry cloth or light air blow.
• Avoid exposure to moisture, direct water spray, or high humidity.
• Ensure proper tuning (gain, crossover settings) to prevent clipping and overheating.
• Verify stable voltage supply to avoid performance fluctuations or damage.
• Inspect RCA and signal cables periodically for wear or loose fit.
• Do not block ventilation fins or heatsink areas during operation.
• Power off system before making any wiring or configuration changes.
• Periodically check for vibration-induced loosening if installed on motorcycles or off-road vehicles