Yamaha SRB40A – The Yamaha SRB40A is a compact active subwoofer that delivers rich bass for live sound applications, small gigs, and home audio systems. With its powerful built-in amplifier and optimized bass response, it ensures deep, full-bodied sound. The compact design makes it easy to integrate into smaller spaces, while still providing excellent performance. Whether used for PA systems, DJ events, or small live performances, the SRB40A is designed to enhance the overall audio experience with its punchy bass and portability.