The KEF PSW3500 is a powered subwoofer designed to deliver deep, impactful bass for home audio systems. It features a 10-inch bass driver, which is housed in a well-constructed enclosure to minimize distortion and enhance sound quality. The subwoofer is equipped with a built-in amplifier that provides ample power to drive the speaker efficiently, optimizing performance across various frequencies. It typically includes adjustable crossover frequency settings and phase control, allowing users to integrate the subwoofer seamlessly with their existing audio setup. The design is sleek and understated, making it aesthetically pleasing and suitable for a variety of home environments. Connectivity options generally include line-level inputs for easy integration with AV receivers, while the subwoofer output allows for utilizing the PSW3500 in multi-channel sound systems. Users appreciate the subwoofer's ability to enhance both music listening experiences and movie playback by providing a solid foundation of low-end frequencies.