








🎵 Feel the bass, not the bulk — power your ride with stealth and style!
The In Phase USW300 is a compact, active underseat subwoofer featuring a robust 300W max output and 130W RMS power. Its lightweight yet durable aluminum cone with integrated damping ensures deep, rattle-free bass. Housed in a rigid die-cast aluminum chassis, this subwoofer resists flex and vibration for consistent performance. Designed for discreet installation under seats or in tight vehicle spaces, it includes a built-in amplifier for seamless plug-and-play setup, delivering powerful audio enhancement without sacrificing cabin space.




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