Diamond Audio MICRO85U 5-Channel MICRO8U Series Full Range Class D Car Amplifier

Diamond Audio MICRO85U

The Diamond Audio MICRO8U 5-Channel Full Range Class D Amplifier, engineered for enthusiasts who want full-system power in one compact amplifier. Designed for car audio, marine, motorcycle, and powersports applications, this 5-channel amplifier delivers clean, efficient performance with the durability needed for all-weather environments.

Part of the advanced Diamond Audio MICRO8U amplifier series, this Class D 5-channel amplifier provides the perfect solution for powering front speakers, rear speakers, and a subwoofer from a single unit. With 150W x 4 + 350W x 1 at 2 ohms and 80W x 4 + 200W x 1 at 4 ohms, the MICRO8U 5-channel amplifier delivers powerful, balanced sound across your entire system, making it ideal for complete audio upgrades and custom installations.

Built for harsh conditions, the Diamond Audio MICRO8U amplifier features a conformal-coated circuit board, ensuring reliable performance in marine audio systems, motorcycles, boats, ATVs, and UTVs. This all-weather amplifier resists moisture, dust, and environmental exposure, making it perfect for outdoor and powersports use.

The compact design allows for easy installation in tight spaces, while the uniform MICRO8U platform maintains a clean, professional look. With independent front, rear, and subwoofer inputs, along with selectable REM, VOX, and DC turn-on modes, this versatile car audio amplifier integrates seamlessly into both factory and aftermarket systems.

Advanced tuning features include a fixed 70Hz high-pass filter for channels 1–4, a variable 40–400Hz crossover for the subwoofer channel, wide frequency response (10Hz–33kHz), and adjustable input sensitivity (0.2–10V) for precise system tuning.

Features:

• Full Range Class-D IR Chipset
• DirectFET Power MOSFET Output Stage
• SMD Technology on 4 Layer Glass PC Board
• Conformal Coated PCB Assembly for All-weather Durability
• ICAD Circuit Provides Superior Overload Protection
• Frequency Response 10 Hz – 30khz (Mono Block 10 Hz – 350hz)
• Advanced Crossover and Tuning Controls (Variable @12dB)
• Micro Bass Boost +12dB @45hz
• Premium 8 Gauge Power Connections
• Compact All-in-One Amplifier Design (Multi Channels/Mono Channel)
• 5 Channel Has Separate Front/Rear/Sub Input - Perfect for DSP
• Selectable REM / VOX / DC Turn-on Modes
• Includes RCA Input & Speaker Output Harness Kits

Specifications

5-Channel MICRO8U Series Full Range Class D Amplifier

Power Rating

• MAX Power : 950 Watts RMS
• RMS Power (2Ω) : 150 Watts x 4 Channel + 350 Watts x 1 Channel
• RMS Power (4Ω) : 80 Watts x 4 Channel + 200 Watts x 1 Channel
• Bridged (Mono 4Ω) : 300 Watts x 2 Channel

Power Supply

• Power Supply : Full PWM
• Power Supply Threshold : 10.0VDC - 17.0VDC
• Idle Current : 0.7A

Distortion

• THD 4 (1KHz @ 4Ω) : 0.5%
• S/N Ratio (A Weighted @ 1W) : -85dBA
• S/N Ratio (A Weighted @ FP) : -101.1dBA

Input Sensitivity

• Low Input Level : 200mV - 10V
• High Input Level : N/A

Input Impedance

• Low Input Level : 20KΩ
• AUX Input Level : 20KΩ

Output Stage

• Output Impedance : 0.018 Ω
• Damping Factor (50Hz @ 4Ω) : >70
• Bandwidth (-3dB) : 10Hz-350Hz

Crossover (-12dB/Oct)

• Variable High-Pass : 40Hz - 400Hz
• Variable Low-Pass : 40Hz - 400Hz
• Variable Sub-Sonic : N/A

Fuse Ratings

• ATC : 60A

Dimensions

• L x W x H : 10.45" x 4.02" x 1.4" (265.6 x 102.11 x 35.56)mm