Enjoy deeper, richer sound wherever you want with your Extra Bass 2 speaker. The passive radiators work alongside two full-range speakers to optimize low frequencies and deliver powerful bass. The SRS-XB23 fits perfectly in the cup holder of your camping chair, making it ideal for open-air festivals. Hang the speaker in your tent or on a nearby tree—wherever you want to enjoy your favorite beats. The X-Balanced Speaker Unit developed by Sony achieves high sound quality and strong sound pressure for a rich, intense, and enjoyable listening experience. Unlike a conventional speaker unit, the membrane of the new X-Balanced Speaker Unit in the XB23 is not round. The non-round shape maximizes the area of the membrane and increases sound pressure for more intense bass. The displacement is reduced while maintaining sound pressure, resulting in less distortion. The innovative design and optimized weight balance also contribute to clearer sound and a wider sound spectrum. The lightweight yet robust speaker cone is made from MICA-reinforced cellulose (MRC) and, along with the dust cap, plays a crucial role in sound quality. The arrangement of the side-mounted passive radiators has been optimized to achieve clear bass reproduction. Comfort was a priority in the design of the SRS-XB23, allowing you to enjoy music easily anytime and anywhere. Whether on a conference call or chatting with friends, the hands-free function lets you make calls conveniently.