Fosi Audio CA30 4 Channel Car Amplifier Mini Class D 400x4 400 Watts, Micro Compact Amp Mono Subwoofer, RCA /High Level Input, 320W 2 Bridgeds, Low Noise HiFi for Vehicle Stereo Audio Sound System

Features

• 4-Channel Car Amplifier Class D Compact Powerhouse This Class D 4-channel car audio amplifier features the Infineon IR4322 automotive-grade chip, supporting stereo and bridgeable modes for flexible system setup. Rated at 200W x 4 @ 4/2 and 400W x 2 @ 4 in bridge mode as a sub amp, it delivers crystal-clear sound across the full frequency range with ultra-low distortion and minimal heatperfect for upgrading your factory car audio or building a custom system.
• Hi-Fi Studio-Grade Sound Quality High SNR & Low Distortion Bringing Fosi Audio's professional Hi-Fi technology to your car stereo, this amplifier is equipped with JRC NJM4580E/ST TJM4558CDT op-amps. It boasts industry-leading specs: THD+N 0.006%, 104dB high SNR, and an ultra-low noise floor of 140V. Far surpassing standard car amplifiers in the same price range, it delivers immersive, lossless sound whether used as a 4 channel car speaker amp or a component amplifier for car audio.
• Versatile 4-Channel Car Amp Mono, Sub, or Full-Range Ready: Bridge mode delivers 400W x 2 @ 4 for powerful bass (ideal as a mono subwoofer amp). Powers tweeters, mids, full-range speakers, or subwoofers. Ultra-low 0.5W standby power and low-voltage protection (triggers at 8.8V) prevent battery drain.
• 88% High Efficiency Class D with Crossover & Pre-Amp Integration The Class D design achieves outstanding 93% efficiency @4 (max >88%), minimizing power loss and heat. It features adjustable HPF/LPF crossover (50Hz-250Hz) and FULL pass mode, with a REM terminal for sync on/off with your head unit and auto-on via high-level input for non-RCA setups. Works seamlessly as a pre amp for car audio or with a dsp amplifier car audio system for precise tuning of tweeters, woofers, and full-range speakers.
• Compact Universal Fit for 12V Vehicles Micro Car Amplifier Design With a mini size of 186x101x44.2mm (7.3" x 3.9" x 1.7"), this compact 4 channel amplifier fits easily under car seats or in the trunk. Fully compatible with all 12V DC gasoline vehicles (sedans, SUVs, trucks, vans, Jeeps), it offers plug-and-play DIY installationno professional skills required. A true micro car amplifier that rivals larger amps like Rockford Fosgate, Kicker, Zapco, and Soundigital models.
• Automotive-Grade Component Durability Built to Last Constructed with high-quality automotive-grade components including premium Sumida inductors and Omron relays, this car multichannel amplifier is designed to withstand harsh automotive environments. Resistant to temperature fluctuations, vehicle vibration, and road shock, it delivers long-lasting, reliable performance for daily commutes and long drivesmatching the durability of top names like JBL, Kicker, and Rockford Fosgate amplifiers.
• CNC Aluminum Heatsink & Multi-Protection System Built with a precision CNC-machined aluminum heatsink for effective heat dissipation, this amp maintains stable performance during long hours of use. Integrated full-protection features include overheating, short circuit, over/under voltage, and reverse polarity protection. Intuitive LED indicators (PWR/PRT/CLIP) show real-time operation status for quick troubleshootingreliable protection like premium brands such as DS18, Deaf Bonce, and Boss 4 channel amps.
• Note: Regarding power, to ensure sound quality, the gain knob's adjustment steps are lower compared to other products. You can achieve a higher volume by increasing the gain knob's adjustment range or turning up the car's head unit volume.