Enjoy deep, punchy sound wherever you like with your EXTRA BASS™ speaker. Dual passive radiators work together with full-range speakers to enhance low-end tones, giving bass a boost. Whether you’re camping with friends or relaxing in the park, the compact and lightweight SRS-XB23 fits into your plans as easily as it fits into your bag The SRS-XB23 fits perfectly in the cupholder of your camping chair – great for chilling out at open-air festivals. Developed by Sony, the X-Balanced Speaker Unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience.