Description Carry small. Use big.

Experience powerful sound pressure in a party speaker. With deeper bass, 360° Party Sound and Party Lighting, all in a speaker that is easy to move around your home.Powerful sound and bigger bass for better partiesThe prominent ULT button gives you access to two exciting bass modes. Powerful bass to feel the beat and get you dancing, or deep bass boost for low-frequency sound that will make your heart tremble.Hit the button. Feel the bass.Press the ULT button to enjoy the powerful sound of ULT1 and ULT2. Select ULT1 for deeper, lower frequency bass. Select ULT2 for powerful, punchy bass.Surround yourself in sound360º Party Sound carries powerful sound to every corner of the room. Four tweeters deliver clear sound to both the front and rear of the speaker, with two mid-range speakers for vocal clarity. Feel the bass sound, thanks to the large X-Balanced Speaker Unit. Together, they let everyone in the room feel the power of the music, wherever they are.Powerful sound with X-Balanced Speaker UnitOur X-Balanced Speaker Unit features an almost square diaphragm, for an increased surface area compared to conventional speaker units. The 320 mm x 320 mm large woofer unit gives clear and deep bass sound.A richer, clearer, deeper experienceThe non-circular diaphragm not only maximises the area of speaker diaphragm but it also increases sound pressure for deeper and punchier bass, less distortion and greater vocal clarity. Altogether, it elevates your listening experience.Booming bass with ULT DUCTThe ULT DUCT improves bass extension for music you can feel. A clever baffle design helps smoothly spread bass throughout your space.Your party on wheelsThe convenient carry handle and stable castors make it easier to transport your speaker. A splashproof top panel is ideal for for worry-free use at spill-prone parties.Carry with easeAn easy-to-carry handle makes it simple to carry or lift your speaker, and the stable castors mean you can pull it over long distances.Splashproof top panelDon't worry about spills on the top panel. With a splashproof design, the party plays on.Lights and karaoke for bigger, better partiesAdd mood with lighting, and instant fun with karaoke, to make every party memorable.Be your own festival with 360° Party LightThe ULT TOWER 9AC doesn’t just play music, it also lights up your party with a synchronised lighting display. So you'll feel like you're at a festival.Music that really gets you moving with Party ConnectLink up to 100 compatible speakers to synchronise music and lighting through Party Connect – fill any location with powerful sound to create the ultimate party atmosphere. And there's no app required, just add speakers with the dedicated hardware button.Add an extra speaker for rich stereo sound with Stereo PairConnect two ULT TOWER 9AC speakers via Bluetooth® function to activate stereo sound (left and right), to experience a rich sense of presence.Karaoke control at your fingertipsPerfect your karaoke with the Echo and Key Control function on the top panel. There's also a second input, so you can plug in another microphone for a duet or even a guitar and use your speaker as an amp.Plug in. Sing up.The optional ULTMIC1 consists of a pair of durable, high-quality wireless karaoke mics, plus a mic jack receiver for always-ready and easy connection to your ULT TOWER.Total convenience, total customisationThe ULT TOWER 9AC is even better with the Sony | Sound Connect app. The simple interface lets you dial in your ideal sound and shortcut settings, including lighting control. It can even keep track of your recent listening history.Boosting live performanceSony's unique function, TV Sound Booster, lets you enjoy enhanced audio-visual sound, watching everything from live performance videos to movies. With deep bass and realistic high-frequency sound spread, you get a true audio-visual experience that draws you right into the action. The ULT TOWER 9AC ramps up your TV sound with the X-Balanced Speaker Unit, while tweeters on the rear help fill the room with pure sound.Connect TV and ULT TOWER 9ACConnect the ULT TOWER 9AC to your TV using the supplied optical cable.How the TV Sound Booster worksA powerful combination of TV sound and the ULT TOWER 9AC’s two rear tweeters and the X-Balanced Speaker Unit will provide you with an upgraded TV sound, whatever you watch.Multipoint ConnectionFor total convenience, the ULT TOWER 9AC can be paired with two Bluetooth® devices at the same time, automatically switching between them when you start playback on either device.Aiming to achieve a zero environmental footprintInspired by the beauty of the world, we are doing our part to help preserve the Earth while still offering superior sound quality and listening experiences. With a goal of achieving a zero environmental footprint across the entire Sony Group by the year 2050, we are accelerating numerous initiatives for the environment.AccessibilityWe believe technology should make the world more interactive, more creative, more entertaining, and more inclusive. By incorporating human-centric, inclusive design into our audio products, we deliver our KANDO experience to all our users, regardless of age, ability or environment.