The Alpine S-Series 4-Channel Power Amplifier is designed to deliver clean, powerful sound for upgraded car audio systems. With RMS power ratings of up to 4 × 90W at 2 ohms, this amplifier provides excellent power and clarity for front and rear speakers, making it ideal for vehicles needing a high-quality sound upgrade.
Built with efficient Class-D amplifier technology, the Alpine S-Series ensures strong performance while producing less heat and using less power than traditional amplifiers. Its compact design makes installation easy in most vehicles, including cars, SUVs, and bakkies such as the Toyota Hilux, VW Polo, Ford Ranger, and Nissan Navara.
The amplifier includes adjustable high-pass and low-pass crossover filters, gain controls, and mid-bass EQ adjustments so you can fine-tune your audio system for clear vocals, balanced mids, and powerful bass. It also supports speaker-level and RCA inputs, allowing compatibility with both aftermarket head units and factory radios.
This versatile amplifier can also run in 3-channel or bridged mode, letting you power two speakers and a subwoofer at the same time. This makes it an excellent choice for complete car audio upgrades where you want improved sound clarity and bass performance.
4-Channel Class-D Car Amplifier
RMS Power:
4 × 90W @ 2Ω
4 × 60W @ 4Ω
2 × 180W bridged @ 4Ω
Frequency Response: 10Hz – 40kHz
Adjustable High-Pass & Low-Pass Filters (50–400Hz)
Mid-Bass EQ control (0–12 dB)
High-level & RCA inputs for factory or aftermarket radios
Compact design for easy installation
Optional remote bass control compatibility
