The Sony SRS-XB33 Extra Bass Portable Bluetooth Speaker delivers powerful wireless audio with deep, punchy bass. It features dual full-range drivers powered by Sony's X-Balanced Speaker Unit technology, paired with two optimized passive radiators engineered for clear, distortion-free bass reproduction. The Mica Reinforced Cellular (MRC) speaker cone and dust cap are engineered to enhance sound quality and rigidity. Bluetooth 5.0 and NFC connectivity enable quick, seamless pairing with smartphones and tablets, with a wireless range of up to 30 meters.

With an IP67 waterproof and dustproof rating and shock-tested construction, the XB-33 is built to withstand beach trips, poolside gatherings, and outdoor adventures. The built-in lithium-ion battery provides up to 24 hours of playback in standard mode, or up to 14 hours in EXTRA BASS mode. USB Type-C charging keeps it powered, while a USB Type-A port lets you charge your smartphone directly from the speaker. The speaker outputs 2 x 8 watts across a 20 Hz to 20 kHz frequency range, and supports AAC, LDAC, and SBC audio codecs.

Party features include a pulsing speaker light and multicolor LED light line that sync to the music's beat, with customizable color settings via the Fiestable app. The Party Connect function wirelessly links up to 100 compatible speakers for synchronized playback and lighting. LIVE SOUND Mode uses onboard DSP combined with angled driver placement to create immersive virtual 3D audio. A built-in omnidirectional condenser microphone enables hands-free calling. Sound modes include EXTRA BASS, LIVE SOUND, Clear Audio+, DSEE, and STAMINA. The Sony Music Center app provides full control over playlists, sound modes, and lighting. The speaker can be placed horizontally or vertically and measures 9.69 x 3.82 x 4.17 inches, weighing 2.43 lbs.