MOCO AF-04.120 4-Channel MOSFET Class-D High Power Amplifier

Clean Power & Dynamic Punch: MOCO AF-04.120

Transform your in-car audio performance with the MOCO AF-04.120 4-Channel MOSFET Class-D Amplifier. Built with a high-efficiency MOSFET power supply and advanced digital Class-D topology, this unit delivers a crisp 120W RMS x 4 @ 4Ω and bridges up to 450W RMS @ 4Ω for subwoofers—ensuring strong, distortion-free output across your complete speaker setup.

Key Features & Highlights

• High Power MOSFET Output: Delivers a reliable 120W RMS x 4 @ 4Ω or 200W RMS x 2 @ 2Ω for high-volume, crystal-clear audio reproduction.

• Massive Bridged Performance: Bridges up to 450W x 2 @ 4Ω, offering flexible power for driving heavy subwoofers alongside front component speakers.

• Dynamic Bass Boost Control: Built-in adjustable Bass Boost (0dB to +12dB) adds deep low-end punch to your audio system.

• Customizable Low Pass Filter (LPF): Variable LPF adjustment (50Hz – 250Hz) allows tight, precise control over bass frequencies.

• Wide Input Sensitivity & High Efficiency: Features 0.2V – 8V gain adjustment with a >90dB Signal-to-Noise Ratio to minimize unwanted electrical interference.

Technical Specifications

• Brand: MOCO

• Model: AF-04.120 (4 CH Mosfet Class D High Power Amplifier)

• Amplifier Topology: MOSFET Class D

• Channels: 4-Channel

• RMS Power Output @ 4 Ohm: 120 Watts x 4

• RMS Power Output @ 2 Ohm: 200 Watts x 2

• Bridged Power Output @ 4 Ohm: 450 Watts x 2

• Frequency Response: 120 Hz – 3,000 Hz

• Signal-to-Noise Ratio (S/N): > 90 dB

• Gain Range: 0.2V – 8V

• Input Sensitivity: 160 mV

• Bass Boost: 0 dB to +12 dB

• Low Pass Filter (LPF): 50 Hz – 250 Hz

• Operating Voltage: 11V – 15V DC

Frequently Asked Questions

Can this amplifier run a subwoofer and front speakers together?

Yes! You can run two channels in stereo mode for your front door speakers (120W x 2) and bridge the remaining two channels (450W x 1) to power a single 4-ohm subwoofer setup.