Ruthless Audio Black 400.4M Micro Amplifier | 4 Channel

Small Size, Ruthless Power

The Ruthless Audio Black 400.4M Micro Amplifier is proof that big things come in small packages. Delivering a clean 400 watts RMS across 4 channels, this compact beast is designed for serious car audio enthusiasts, motorcycle builds, powersports, and stealth installs where space is tight but performance is non-negotiable.

Don’t let its size fool you — with 100W x 4 @ 2 Ohms and 60W x 4 @ 4 Ohms, the 400.4M Micro Amp drives your speakers with clarity, punch, and authority. Built on a high-efficiency Class D platform, it ensures crisp, distortion-free sound and reliable performance every time you hit play.

Key Features

• 400 Watts RMS Power: True rated output for clean and dynamic sound.
• Ultra-Compact Design: Perfect for motorcycles, UTVs, powersports, or tight-space installs.
• Class D Efficiency: Runs cool and efficient while delivering ruthless performance.
• Flexible 4-Channel Setup: Power your full system or bridge channels for added output.
• Built Ruthless Tough: Premium components and rugged design ensure long-lasting reliability.
• Crystal-Clear Sound: Designed for minimal distortion and maximum clarity.

Technical Specifications

• RMS Power:
  • 100W x 4 @ 2 Ohms (14.4V)
  • 60W x 4 @ 4 Ohms (14.4V)

• Frequency Response: 20Hz – 8kHz

• High-Pass Filter: 20Hz – 8kHz

• Low-Pass Filter: 50Hz – 8kHz

• Signal-to-Noise Ratio: >95dB

• Fuse Rating: 60A

• Operating Voltage: 9V – 16V

• Finish: Sleek Matte Black

Why Choose the Ruthless Audio 400.4M Micro Amplifier?

If you’re looking to upgrade your factory system or power a high-end aftermarket build, the Ruthless Black 400.4M is the perfect solution. Its versatile 4-channel design allows you to run a full setup with precision or bridge channels for extra output when needed. With its small footprint, it can be hidden almost anywhere — but its sound is impossible to ignore.

Whether you’re cruising on a motorcycle, tearing up trails on a UTV, or building a stealth car audio system, the Ruthless Audio Black 400.4M Micro Amplifier gives you the muscle, efficiency, and crystal-clear sound your music deserves.

Final Word

Compact, efficient, and built to perform, the Ruthless Audio Black 400.4M Micro Amplifier | 4 Channel is the ultimate solution for anyone who needs big power in a small package.

In Stock Now at Amped Up Car Audio – Order today and experience the ruthless performance of the 400.4M Micro Amp.