Moco AF 4.120 Class D 4 Channel Amplifier 120W/ Channel

Upgrade your car audio system with the MOCO AF-04.120 4-Channel MOSFET Class-D High Power Amplifier, designed for enthusiasts who want stronger output, improved control and a more dynamic listening experience. Built around a high-efficiency MOSFET power supply and digital Class-D amplifier topology, the AF-04.120 provides powerful amplification in a versatile 4-channel configuration. With up to 120W RMS × 4 at 4Ω, the amplifier can deliver substantial power to a complete speaker setup. Its flexible output configuration also supports 200W RMS × 2 at 2Ω and up to 450W × 2 bridged at 4Ω, making it suitable for different car-audio configurations where additional power is required. Key Features 4-Channel Class-D Amplifier: Digital Class-D topology provides an efficient solution for upgrading your vehicle's audio system. High-Power MOSFET Design: High-efficiency MOSFET power supply and output technology for strong and reliable amplification. 120W RMS × 4 at 4Ω: Delivers powerful output for compatible speakers. 200W RMS × 2 at 2Ω: Provides additional flexibility for compatible lower-impedance speaker configurations. 450W × 2 Bridged at 4Ω: High bridged output for compatible high-power applications. Adjustable Bass Boost: Variable Bass Boost from 0 dB to +12 dB for additional low-frequency impact. Variable Low Pass Filter: LPF adjustment from 50 Hz to 250 Hz allows control over the bass frequencies passed to compatible connected components. Wide Gain Range: Gain adjustment from 0.2V to 8V helps match the amplifier with different source and system configurations. High Signal-to-Noise Ratio: S/N ratio greater than 90 dB helps maintain a clean audio signal. Compact Car Audio Upgrade: A versatile amplifier solution for systems requiring additional power and tuning control. Technical Specifications Brand MOCO Model AF-04.120 Amplifier Type 4-Channel MOSFET Class-D High Power Amplifier Channels 4-Channel RMS Power Output @ 4Ω 120W × 4 RMS Power Output @ 2Ω 200W × 2 Bridged Power Output @ 4Ω 450W × 2 Frequency Response 120 Hz – 3,000 Hz Signal-to-Noise Ratio > 90 dB Gain Range 0.2V – 8V Input Sensitivity 160 mV Bass Boost 0 dB to +12 dB Low Pass Filter 50 Hz – 250 Hz Operating Voltage 11V – 15V DC Powerful 4-Channel Performance The MOCO AF-04.120 is designed for car audio systems that need more amplification than a standard head unit can provide. Its 4-channel architecture allows multiple compatible speakers to be powered from a single amplifier while providing useful configuration flexibility. At 4Ω, the amplifier delivers 120W RMS × 4, providing substantial power for compatible speaker systems. For compatible 2Ω configurations, it can deliver 200W RMS × 2. The amplifier can also be bridged for higher-power applications, with up to 450W × 2 at 4Ω as specified. Adjustable Bass Boost and LPF Control The built-in Bass Boost control ranges from 0 dB to +12 dB, allowing the user to add low-frequency emphasis according to the overall sound-system configuration and listening preference. The variable Low Pass Filter can be adjusted from 50 Hz to 250 Hz. This provides frequency-control flexibility when configuring the amplifier with compatible speakers or other components in a car audio system. High-Efficiency MOSFET Class-D Design The MOCO AF-04.120 combines a MOSFET power supply with digital Class-D amplifier topology to provide an efficient high-power amplification solution. This makes it well suited to custom car audio installations where additional output and system flexibility are important. Flexible Car Audio System Integration With its 4-channel design, multiple power configurations and adjustable gain and filtering controls, the AF-04.120 can be incorporated into a variety of compatible car audio systems. Its high-power bridged configuration also provides flexibility for installations requiring higher output from selected amplifier channels. For the best performance, the amplifier should be installed with speakers, subwoofers and other components that are electrically compatible with the amplifier's specified power and impedance requirements. Professional installation is recommended for correct power, signal and speaker connections. Why Buy MOCO AF-04.120? High-power 4-channel MOSFET Class-D car amplifier. Up to 120W RMS × 4 at 4Ω output. Supports 200W RMS × 2 at 2Ω configuration. Up to 450W × 2 bridged at 4Ω as specified. Adjustable 0 dB to +12 dB Bass Boost. Variable 50 Hz–250 Hz LPF. Wide 0.2V–8V gain range. >90 dB signal-to-noise ratio for a cleaner audio signal. Designed for powerful and flexible car audio system upgrades. Installation & Setup The MOCO AF-04.120 should be installed according to the amplifier's specified electrical, speaker impedance and power requirements. Correct gain and filter adjustment is important for achieving balanced system performance and protecting connected components. Because car audio installations can vary depending on the head unit, speakers, subwoofers and wiring configuration, professional installation is recommended, particularly when using bridged channels or integrating the amplifier into a multi-amplifier system. Frequently Asked Questions What is the MOCO AF-04.120 amplifier used for? The MOCO AF-04.120 is a 4-channel car amplifier designed to provide additional power to compatible car speakers and subwoofer configurations. It can deliver up to 120W RMS × 4 at 4Ω and supports higher-power bridged configurations as specified. How much power does the MOCO AF-04.120 produce? The amplifier delivers 120W RMS × 4 at 4Ω, 200W RMS × 2 at 2Ω, and up to 450W × 2 bridged at 4Ω according to the specified output configurations. Does the MOCO AF-04.120 have Bass Boost and LPF controls? Yes. The amplifier features adjustable Bass Boost from 0 dB to +12 dB and a variable Low Pass Filter from 50 Hz to 250 Hz, allowing the audio system to be tuned according to the connected components.