The Teac SW-R 3 is a specialized subwoofer designed to enhance low-frequency sound performance in audio systems. It features a sleek and compact design, making it suitable for various setups, including home theater and music listening environments. The SW-R 3 incorporates a bass reflex design to maximize efficiency and output while minimizing distortion. It is powered by an integrated amplifier, allowing for easy connection and setup. The subwoofer typically is equipped with manual level controls for volume adjustment and a phase switch that helps in aligning the subwoofer with other speakers for optimal sound coherence. Additionally, it often includes various input options to accommodate different audio sources. The build quality is aimed at durability and performance, suitable for both casual listeners and audio enthusiasts looking to enhance bass response in their audio experience.