Compact, lightweight, and easy to carry—wherever you're heading, make the SRS-XB23 the first thing you pack. 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 place it horizontally or vertically the SRS-XB23 sits securely so you can always find space for it, wherever you’re partying. When placing it horizontally, you can switch from monoaural audio playback to stereo audio playback using the Sony | Music Center app. Developed by Sony, the X-Balanced Speaker Unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience.